"Something is happening in Hollywood tonight," tweeted actor Patrick Stewart as he has makeup applied on Monday, April 18. He appeared in drag for a screening of his TV show "Blunt Talk."
Twin actresses Mary-Kate and Ashley Olsen take their "first public selfie ever" in this photo posted by the Sephora cosmetic company on Wednesday, April 13.
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A star-studded group takes a selfie on Thursday, April 7. From left are comedian Chris Rock, rapper Andre 3000, DJ D-Nice, musician Jarobi White, musician Jack White and comedian Dave Chappelle. "Hard at work on the new Andre 3000 album," Rock joked (we think) on Instagram.
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Actor Jordan Peele, left, tweeted a photo with his "Keanu" co-stars Keegan-Michael Key and Keanu the cat on Wednesday, April 13. "Keanu, Key and I are bouncing around ATL right now," he said. "See the movie and adopt a cat pls."
Model Rosie Huntington-Whiteley, second from right, posted this selfie from the "Hot Mess" birthday party of actress Kate Hudson, left, on Sunday, April 24. Joining them in the shot: model Kelly Sawyer, second from left; writer Derek Blasberg, center; and model Poppy Delevingne, far right.
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"Best celebrity I've ever met," said actor Seth Rogen, posing with Gonzo the Muppet on Wednesday, April 6.
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The United Nations posted this selfie of actor Leonardo DiCaprio to its Twitter account on Friday, April 22. DiCaprio was designated a U.N. Messenger of Peace in 2014.
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Basketball star Kobe Bryant poses with two young fans in Houston on Sunday, April 10. Bryant retired from the NBA this month, scoring 60 points in his final game.
Wally Skalij/Los Angeles Times
Musician will.i.am, second from right, visits a migrant camp in Calais, France, on Wednesday, April 13.
Chris Radburn/PA Wire/ZUMA Press
A woman in London takes a selfie in front of a Queen Elizabeth II portrait on Tuesday, April 19. The Queen celebrated her 90th birthday this month.
Anthony Devlin/PA Wire/ZUMA Press
Baseball star Bryce Harper snaps a selfie with an unsuspecting fan on Monday, April 25. "Just some shenanigans on the off day at the @smithsonian Natural History museum!" Harper said on Instagram.
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People take a selfie in front of First Avenue, the Minneapolis nightclub featured in the movie "Purple Rain," on Thursday, April 21. Prince, the iconic musician who starred in the film, died earlier in the day. He was 57.
CRAIG LASSIG/EPA
Xosha Roquemore, left, attends a party with fellow actresses Mindy Kaling, center, and Ashlee Olivia Jones on Sunday, April 24.
Comedian Kevin Hart takes a selfie with, from left, actors Queen Latifah, Will Smith, Halle Berry and Dwayne Johnson on Saturday, April 9. Hart and Johnson were hosting the MTV Movie Awards.
Kevin Mazur/WireImage/Getty Images
People pose in front of the gender-neutral restroom they lobbied for in the Los Angeles school district on Tuesday, April 19.
Lucy Nicholson/Reuters/ZUMA Press
Actress Daisy Ridley enjoys some pizza as she attends her first basketball game on Sunday, April 10. "We tried all sorts of poses but I definitely look best in this glorious selfie," she said on Instagram.
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Villanova basketball players take part in a championship parade on Friday, April 8. Earlier in the week, the Wildcats won the NCAA title on a buzzer-beating 3-pointer.
Bill Streicher/USA TODAY Sports
"Note to industry: Never invite me into a costume warehouse," actor Topher Grace said on Wednesday, April 6.
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Singer Demi Lovato and football player Michael Sam take a selfie at the GLAAD Media Awards on Saturday, April 2.
Frazer Harrison/Getty Images
Actress Maisie Williams brought extra snacks to some fans' "Game of Thrones" viewing party on Sunday, April 24. She also tried some of their snacks. "Thanks for the dragon egg cookies, they were THA BOMB," she said on Instagram.
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Actor Josh Duhamel takes a selfie in the cockpit as he flies with the U.S. Air Force "Thunderbirds." "What an honor," he tweeted on Saturday, April 16.
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"Hanging with the cool kids after @jimmykimmellive," actor John Stamos said on Tuesday, April 26.
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Actress Nicole Kidman poses for a fan's photo at the Academy of Country Music Awards on Sunday, April 3.
Larry Busacca/ACM2016/Getty Images
Actor Paul Bettany takes a selfie before the German premiere of the new Captain America movie on Thursday, April 21.
Fabrizio Bensch/Reuters/ZUMA Press
Speaking of Captain America, here's someone in the Avenger's costume -- along with a Donald Trump mask. Trump was in Indianapolis for a campaign event on Wednesday, April 20.
Luke Sharrett/Bloomberg/Getty Images
A bloodied Jeremy Clarkson takes a selfie after filming a stunt for his upcoming TV series on Amazon. "I survived the day," he tweeted on Friday, April 1. "Just."
Bertrand Piccard takes a selfie aboard a solar-powered plane during a test flight over the Pacific Ocean on Saturday, April 9.
Bertrand Piccard/Global Newsroom/AP
Democratic presidential candidate Hillary Clinton pauses for a selfie at a campaign event in Los Angeles on Saturday, April 16.
Jae C. Hong/AP
A man takes a selfie after lighting up a joint in front of the White House on Saturday, April 2. Dozens of protesters were calling for the legalization of marijuana.
MIKE THEILER/AFP/Getty Images
A man takes a selfie on the roof of an abandoned building in Pripyat, Ukraine, on Friday, April 22. Workers of the Chernobyl nuclear plant lived there 30 years ago, before an explosion tore through a reactor in April 1986.
Anatolii Stepanov/ZUMA Wire
Saul "Flip" White, a member of the Harlem Globetrotters, uses a selfie stick during an exhibition game in Las Vegas on Tuesday, April 19.
Ethan Miller/Getty Images
Radio host Jenny McCarthy takes a selfie with hip-hop duo Salt-N-Pepa on Tuesday, April 19.
Monica Schipper/Getty Images
"As you can see I'm excited to be back to the family at GMA!" said television host Michael Strahan, who is moving to "Good Morning America" full time in May.
Actor Wil Wheaton breaks out a horse mask to watch the Los Angeles Kings play hockey on Wednesday, April 20. The Kings lost the playoff game and the series to the San Jose Sharks.
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U.S. Sen. Jeff Flake tries to take a selfie with a pig before a news conference about "pork-barrel" spending on Wednesday, April 13.
U.S. Sen. Bernie Sanders, who is seeking the Democratic Party's presidential nomination, poses for a selfie at a Nathan's hot dog restaurant on New York's Coney Island on Sunday, April 10.
Mary Altaffer/AP
People in costume take a selfie at the Pyrkon Festival, a fantasy convention in Poznan, Poland, on Saturday, April 9.
WWE superstar Natalya snaps a selfie in the mirror on Thursday, April 7. "See you later," she said on Instagram.
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Baseball fans in Baltimore take a selfie on Opening Day, Monday, April 4.
Icon Sportswire/Corbis
Ohio Gov. John Kasich, a Republican presidential candidate, poses for a selfie in New York on Thursday, April 7.
John Taggart/Bloomberg/Getty Images
Actress Brie Larson announces that she will be hosting an upcoming episode of "Saturday Night Live." "DON'T PANIC BECAUSE I'M NOT PANICKING GAAAAHHHHHH!!!" she said on Instagram on Sunday, April 17. "So super excited! Hope you're ready @nbcsnl. We will dance on May 7th!"
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U.S. Vice President Joe Biden takes a selfie Thursday, April 14, as he greets guests during the Wounded Warrior Ride, a cycling event to help wounded members of the military.
Rapper Snoop Dogg, right, works with producer Jazze Pha on Tuesday, April 26. "Cadillac music coming soon," Snoop said on Instagram.
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A man in Aleppo, Syria, takes a selfie in front of a missile that landed in a field on Tuesday, April 26.
Ahmed Hasan Ubeyd/Anadolu Agency/Getty Images
U.S. Sen. Ted Cruz, a Republican presidential candidate, uses a selfie stick during a campaign rally in Irvine, California, on Monday, April 11.
FREDERIC J. BROWN/AFP/Getty Images
Actor Tom Lenk takes a photo with his dog Charley on Monday, April 25. "Charley is looking more and more like her father everyday day. Or is it he other way around? I don't know any more. Either way, I'm so proud," Lenk said on Instagram.
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Pro golfers Rickie Fowler, left, and Justin Thomas take a photo together after they both made hole-in-ones at the Masters Par 3 Contest on Wednesday, April 6.
Michael Madrid/USA TODAY Sports
Actor Alex Brightman snaps a selfie with comedian Jim Gaffigan backstage at the Broadway musical "School of Rock" on Sunday, April 3.