Iggy Azalea and Britney Spears on the set of Britney's new music video, Studio City, Los Angeles, April 9, 2015.

Hilary Swank and Edie Falco attend ASPCA'S 18th annual Bergh Ball at The Plaza Hotel in New York City, April 9, 2015.

Lake Bell attends ASPCA'S 18th annual Bergh Ball at The Plaza Hotel in New York City, April 9, 2015.

Deborah Cox  attends ASPCA'S 18th annual Bergh Ball at The Plaza Hotel in New York City, April 9, 2015.

Fifty Shades of Grey star Dakota Johnson and former beau Matthew Hitt were spotted walking Dakota's dog together, New York City, April 9, 2015.

Krysten Ritter  films a scene for her upcoming Netflix series A.K.A. Jessica Jones in Union Square Park, New York City, April 9, 2015.

Rumer Willis spotted leaving the Dancing with the Stars dance studio, Los Angeles, April 9, 2015.

Justin Bieber makes a surprise appearance during Ariana Grande's performance at The Forum in Inglewood, CA, April 8, 2015.

Sting, rocking a bushy beard, leaves  The Merrion Hotel in Dublin, Ireland, April 8, 2015.

Gigi star Vanessa Hudgens exits the Broadway opening night premiere, New York City, April 8, 2015.

Ricky Gervais and Jane Fallon attend a special screening for Derek, Los Angeles, April 8, 2015.

Gucci-wearing Amal Clooney steps out of Morandi restaurant in New York City, April 8, 2015.

Ashanti leaves NBC Studios and grabs a Godiva chocolate-covered strawberry on the way, New York City, April 8, 2015.

Game of Thrones hunk Kit Harington signs autographs for fans during his Good Morning America appearance, New York City, April 8, 2015.

Hilary Swank hops into a waiting car after her appearance on The Meredith Vieira Show, New York City, April 8, 2015.

Nick Jonas arrives from Berlin at Heathrow airport, London, April 8, 2015.

Keeping her usual low profile, Kristen Stewart is spotted arriving at LAX airport, Los Angeles, April 8, 2015.

David Beckham stays fit at SoulCycle in Brentwood, California, April 7, 2015.

Super blonde Khloe Kardashian departs LAX airport, Los Angeles, April 7, 2015.

Veep stars Anna Chlumsky and Julia Louis-Dreyfus attend the show's premiere at the SVA Theater, New York City, April 6, 2015.

Girls actors Jon Glaser and Greta Lee attend the Veep premiere at the SVA Theater, New York City, April 6, 2015.

Scott Eastwood and Britt Robertson attend the The Longest Ride premiere at the TCL Chinese Theater, Los Angeles, April 6, 2015.

Director George Tillman Jr. and family attend the The Longest Ride premiere held at the TCL Chinese Theater, Hollywood, April 6, 2015.

Lolita Davidovitch and family arrive at the The Longest Ride premiere held at the TCL Chinese Theater, Hollywood, April 6, 2015.

Cinderella star Lily James arrives at Haneda International Airport in Tokyo, Japan, April 6, 2015.

Ryan Reynolds rocks the full Deadpool costume while filming along the Georgia Viaduct in Vancouver, Canada, April 6, 2015.

Vampire Diaries star Ian Somerhalder and his fiancée Nikki Reed walk along Abbot Kinney Boulevard in Venice, Calif., April 6, 2015.

Reese Witherspoon (is the Just Keep Livin' cap a gift from Matthew McConaughey?) leaves her yoga class in Brentwood, Calif., April 6, 2015.

Andy Cohen takes his beagle-foxhound mix, Wacha, out for a walk in the West Village, New York City, April 6, 2015.

Salt-N-Pepa attend the launch of the Lane Bryant #ImNoAngel campaign in New York City, April 6, 2015.

Anne Hathaway and her husband Adam Shulman stroll around the West Village, New York City, April 6, 2015.

Kaili Thorne joins her sister Bella Thorne for the "Find Your Park" launch event at Madison Square Park in New York City, April 2, 2015.