Jennifer Hudson snaps on media

It appears that Jennifer Hudson does not want to be associated with reports about her half-brother, Stephen Angelo Simpson, being arrested in the stabbing of his estranged wife's boyfriend. She tweeted, "Media pls stop reporting shhh that has absolutely nothing to do with me ! Very offended." Hudson's mother, brother and nephew were killed in 2008 by her former brother-in-law.

Don't mess with George Clooney's family -- or his fiancee. The actor made a personal response to the UK's Daily Mail on July 9 after spotting an article in the paper about his soon-to-be-bride, Amal Alamuddin, and her mother. With the paper said that Clooney's future mother-in-law was trying to stop the wedding, Clooney quickly fought back, calling the article "dangerous" and "completely fabricated." The actor won this round; The Daily Mail swiftly deleted the piece.

Joan Rivers' interview with CNN's Fredricka Whitfield on July 5 went awry when Rivers took offense to Whitfield's line of questioning about her new book and walked out on the Q&A. Speaking to "Access Hollywood" after her angry exit, Rivers said she felt like she was being interrogated. "It's not the Nuremberg Trials. She was going at me so negatively. ... It's a funny book," Rivers said. "It's like, you don't say to the Olsen twins, 'What's your favorite place to vomit?' ... I really did get mad."

James Franco lashed out at The New York Times and its theater critic, Ben Brantley, over a lukewarm review of the "Of Mice and Men" Broadway revival in which Franco stars. "Brantley is such a little b****," the actor said in an Instagram takedown that he later removed -- but not before it was screengrabbed for posterity.

Alec Baldwin is another actor who readily battles with the press. From the New York Times to MSNBC and TMZ, Baldwin is never at a loss for words.

Former Miss California USA Carrie Prejean called Larry King "inappropriate" on CNN in 2009 during his show and took her mic off. Prejean was on to discuss the controversy over her statements that marriage is between a man and a woman, a sex tape and being stripped of her crown. Miss USA pageant owner Donald Trump later said he was puzzled by her behavior.

In January 2013, director Quentin Tarantino was doing press for his film "Django Unchained" when Britain's Channel 4 reporter Krishnan Guru-Murthy asked him whether he thinks movie violence can lead to actual violence. Unreceptive to the insinuation about his movies, Tarantino shot back, "You can't make me dance to your tune. I'm not a monkey" and "I'm shutting your butt down!"

Samuel L. Jackson is not Laurence Fishburne, and he's been very clear about that. In February 2014, Jackson scolded CNN affiliate KTLA's Sam Rubin for making that mistake.

In 2010, Mel Gibson was being interviewed about his film "Edge of Darkness" by WGN Chicago reporter Dean Richards when Richards asked about scandals including his drinking problem and an anti-Semitic rant. "That's almost four years ago, dude. I've moved on. I guess you haven't," Gibson said. The actor could be heard calling Richards an a**hole at the conclusion.

In March 2014, late night host and comic Chelsea Handler challenged CNN's Piers Morgan, calling him unfocused. "You can't even pay attention for 60 seconds," she said. "You're a terrible interviewer."

Who can forget the 2005 "Today Show" interview when Tom Cruise, taking exception to Matt Lauer's questions, accused the host of being "glib"? "Matt, you're glib. ... You don't even know what Ritalin is," Cruise said during a discussion about prescription drugs. It was a little tense.

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Meet Sobrr, the anti-Facebook app

Sobrr's launch party in June offered free beer, appropriate for an app that helps hide the evidence of users' wild nights out.

• Sobrr is a 24-hour social-networking app on which posts disappear after one day


• It's geared toward sharing with "no strings attached," app's founder says


• Sobrr shows other users near you and you can "cheer" their actions


• Disappearing message apps like Snapchat have become popular

(CNN) -- What would you do if you only had one day to live? Probably not spend time downloading and fiddling with a mobile app, we're guessing.

But a new app, Sobrr, wants you to embrace life in just that way. It lets you create a social network geared toward meeting new people around you, sharing photos and videos of what you're up to and supporting other users who are also living it up. Or whatever.

Using GPS, Sobrr identifies other users close to you and shows them your posts. They may then "cheer" or comment on those posts and, if both parties agree, they can become "24-hour friends." There's an option for users who hit it off to make each other permanent parts of their network.

The kicker is that, anything you do using the app is totally erased after 24 hours. Texts you send to other users disappear after a few seconds and photos or videos you share can go away nearly as quickly.

The app's co-founder, Bruce Yang, says that in an era when your third-grade teacher can find you on Facebook and anyone you've ever met at work wants to network on LinkedIn, people are craving an app like Sobrr. It lets them share without worrying their actions will go down on their permanent record.

Disappearing message app craze

Campus safety apps

Would you find your next date on an app?

"It promotes sharing only the most refreshing contents and leading a casual relationship with no strings attached," said Yang, an alum of Fitbit, LinkedIn and Microsoft.

So, you can call Sobrr the anti-Facebook. But if you want to call it Tinder meets Snapchat meets Foursquare, you wouldn't be that far-off either.

The app's name reflects the moment the idea first dawned on Yang -- the morning after a Las Vegas bachelor party. He says he noticed all of his fellow partyers rushing onto their social media accounts to make sure they hadn't shared any incriminating info about the previous night.

No, Yang says, his app isn't just another tool for the hookup culture or a way to send naughty photos without having to answer for them later. But if somebody wants to use it that way? He's not here to stop them.

"From the party animals that I've surveyed, more than half admitted that they want to meet new people in the party, and crave for a one-night stand," he said.

Sobrr lets users post content "that they might otherwise feel too embarrassed to post on other platforms," he said. Yang also said it's important for users "to have their own space and little secrets."

But he maintains that "naughty stuff" is only a small part of what users have been sharing in the month since the app's release.

"We understand that 'hooking up' is the need of many users on the platform, but we really value more of the casual interaction and conversation on the platform -- the foreplay of hooking up," he said. "People are more attracted by each other based on their life moments or a common interest."

It's possible the Silicon Valley startup is onto something. In the past year or so, ephemeral messaging apps such as Snapchat, Confide and Wickr have flourished.

So far, the app's user base remains relatively small, boasting 10,000 users in the weeks it's been available exclusively for Apple's mobile devices. Whether more folks will flock to it to live a more carefree social media life, or merely hide the evidence from their wild nights out, remains to be seen.

Celebrating Hawaii's 55th 'birthday'

It's been 55 years since Hawaii officially became a U.S. state. For the occasion, we're featuring some of the best photos that CNN iReporters have taken of the Aloha State. Here, Jutka T. Emoke Barabas captured a warm sunset over the calm waters off Honolulu in August 2012.

The cinder cones of Maui's Haleakala National Park form a stark volcanic landscape. Despite its desolate feel, the park is home to many endangered species.

Jon Rosiska photographed lava flowing into the ocean while traveling along the Big Island's coastline in April 2013.

Lava flows from the Pu'u O'o Crater at the Kilauea volcano on the island of Hawaii. The crater has been erupting regularly since January 1983.

A "30-second bicycle ride" can transport Sarah Lopez from her home in Sunset Beach to the north shore of Oahu, Hawaii. The vibrant sky is often caught by the shore's tidal pool, creating a breathtaking scene.

The vibrant fronds of the Hapuu fern tree against the dark, volcanic soil are a reminder of the harsh and beautiful nature of Hawaii Volcanoes National Park. Jill Thornton, a resident of the Big Island, visited the park in May 2012.

The sprawling trails of Hawaii Volcanoes National Park will lead visitors to some of the island's most diverse ecosystems, filled with native terrestrial flora and fauna.

Waimea, located on the Big Island, is home to rolling green hills and pastures and paniolos, also known as Hawaiian cowboys.

Lee Gunderson captured a lonely stretch of road in February 2006 on the Big Island, leading to the base of Mauna Kea and the W. M. Keck Observatory.

Stalks of mullein stud the slopes of Mauna Kea, a dormant volcano. Mauna Loa, one of five volcanoes that form the island of Hawaii, is visible in the distant background.

Hawaii is known for its surfing, thanks to big waves like this one photographed by Kenji Croman in March at Rocky Point on Oahu's North Shore.

This moss-covered bridge stretching into the thick canopy of tropical forest leads out to Laupahoehoe Point Beach Park on the Big Island's east coast.

Feeling daring? Oahu's Laie Point State Wayside has cliffs from which daredevils often jump. Gail Powell says she enjoyed taking this photo but wasn't interested in taking the plunge herself.

If nature isn't your thing, Waikiki's Kalakaua Avenue offers a variety of luxury boutiques for shoppers, and you'll still be able to see a stunning ocean view from the street.

You can snorkel, surf or just take a boat out at Kahaluu Bay on the Kona coast of the Big Island.

The Koolau Mountain Range dominates the eastern coastline of Oahu.

The Dole Plantation has hundreds of acres of pineapple fields dedicated to cultivating and growing Hawaii's sweet and tart fruit. The plantation, a popular attraction in Oahu, says it draws more than 1 million visitors annually.

Sunset at the Duke Kahanamoku Lagoon, a popular man-made pool in Waikiki.

A blue butterfly rests on a kookoolau flower in Kealia Trail in Mokuleia along Oahu's North Shore in a shot by Richard Rehkemper.

Hikers can explore the spellbinding lava tube of kaumana cave, which stretches about 25 miles. This volcanically formed cave is in Kaumana Caves County Park near Hilo on the Big Island.

Paddle boarding is a popular pastime on the Big Island. Here, two adventurers and a four-legged companion drift gently through the calm waters of Kailua Bay in Kona.

Dancers are among the sights at the King Kamehameha Floral Parade in 2012 in Honolulu. The annual parade is held on Kamehameha Day, a June 11 holiday that celebrates the first king of the Hawaii Islands.

Care to be lulled to sleep with the sound of waves rumbling in the background? Camp Mokuleia on the North Shore of Oahu offers visitors a chance to sleep on the beach.

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• Hawaii officially became a U.S. state 55 years ago


• To mark the occasion, iReporters offer beautiful photos from Hawaii

Do you have a gorgeous travel snapshot? Share it with CNN iReport.

(CNN) -- Formed by volcanoes and steeped in a rich history of Polynesian culture, Hawaii sounds more like a place in a fantasy novel rather than an American travel oasis.

Made up of a chain of volcanic mountains that form eight major islands, Hawaii stretches about 1,500 miles. The state's vast expanse provides a diverse terrain for visitors to explore -- tropical rain forests, cool alpine regions, arid deserts and sunny beaches -- all within miles of one another.

The region's beauty, history and landscape have enthralled novice and seasoned travelers alike. American travel writer Paul Theroux once said, "Hawaii is not a state of mind, but a state of grace."

The Aloha State on Thursday marks a milestone as it celebrates 55 years since becoming a U.S. state. To honor the occasion, we're sharing a breathtaking collection of photos that CNN iReport contributors have captured on the islands.

29 beach photos that'll make you drool