
"First day on set of new film and they're going to town on my hair! Ah!!!!!" actress Kate Hudson said on Instagram on Thursday, May 7.

Actor Zach Braff, right, posted a selfie with his former "Scrubs" stars Donald Faison, left, and Neil Flynn on Thursday, May 7. "Reunited," Braff said on Instagram.

Actress Lena Dunham, left, takes a selfie with comedian Amy Schumer on Sunday, May 10.

"My day is filled with 3 photoshoots and some other things but i just got the energy i needed when i got a special surprise visit from my mother," basketball star Dwyane Wade said on Instagram on Wednesday, May 6. That's Wade's mother in the back, next to Wade's friend Lisa Joseph Metelus.

A woman in Bangkok, Thailand, takes a selfie with a golden retriever on Monday, May 11, during a news conference for Pet Expo Thailand. The pet fair will be held later this month in the Thai capital.

"We named this run SavGnar because it sounded Icelandic and because it was a bit savage and gnarly," snowboarder Gretchen Bleiler said in this Instagram selfie she posted from northern Iceland on Monday, May 11.

Pop star Justin Bieber sticks his head out a car window to pose for fan photos in New York on Thursday, May 7.

Actor Adrian Grenier poses for a selfie at the Lord & Taylor department store in New York on Monday, May 11.

"My gorgeous sister Annachi was my date tonight," said actress Rebel Wilson, left, on Friday, May 9. "She came all the way from Australia x legend x."

Model Yolanda Foster, from the television show "The Real Housewives of Beverly Hills," takes a selfie with her friend Ellie O'Connell on Monday, May 11. "What is the likelihood of 2 BFF's getting a disease without a cure?" Foster, left, said on Instagram. O'Connell has ALS. Foster has been diagnosed with Lyme disease. She added the hashtags "#SnuggledUpWithMyBestie" and "#SearchingForACure."

Actress Gabrielle Union took a selfie of her "trailer life" on Monday, May 11."People always ask me what I do between scenes," said the "Being Mary Jane" star. "Well... I watch alot of #ESPN and #HGTV ... also re-reading "Coming of Age in Mississippi" by Anne Moody (classic)."

A NASCAR fan takes a selfie on the Kansas Speedway track before the start of the Sprint Cup race there on Sunday, May 9.

Actress Tina Fey stops for a fan's photo in New York on Thursday, May 7. Fey was appearing on the "Late Show with David Letterman."

Freestyle skier Gus Kenworthy takes a selfie with The Sochi Pups -- dogs adopted from Sochi, Russia, during last year's Winter Olympics -- as they travel to the beach on Thursday, May 7.

Actress Elizabeth Banks, director of "Pitch Perfect 2," poses with fans at the film's premiere in Los Angeles on Friday, May 8.

Hip-hop artist Vic Mensa tweeted this selfie from Chance the Rapper's Open Mike Night on Chicago's South Side on Monday, May 11. Mensa and Kanye West were surprise performers for the high school students in attendance.

Actor Tom Hardy takes a selfie with fans in Hollywood at the premiere of "Mad Max: Fury Road" on Thursday, May 7.

Model Cara Delevingne, center, posted this "#MetBall" selfie with pop star Miley Cyrus, left, and actress Zoe Kravitz on Wednesday, May 6.

"Someone just got their @si_golf June issue in the mail. Did y'all get yours?" said golfer Michelle Wie on Saturday, May 9.

Pope Francis poses for a boy's selfie during an audience at the Vatican on Thursday, May 7.

Actor George Clooney smiles for a fan's selfie while attending the "Tomorrowland" premiere, which took place Saturday, May 9, in Anaheim, California.

Actress January Jones posted this selfie to Instagram on Wednesday, May 6, with the caption "#sailboat (beyonce voice)."

Fans in Singapore take a selfie with singer Melanie Chisholm, one of the former Spice Girls, during an "Asia's Got Talent" showcase on Friday, May 8.

A couple takes a selfie near a statue of Mao Zedong during a sandstorm in Kashgar, China, on Sunday, May 10. See 21 selfies from last week