[custom_adv] Emma Stone and Jennifer Lawrence Actresses Emma Stone and Jennifer Lawrence have been longtime friends ever since their shared co-star Woody Harrelson introduced them. [custom_adv] Pitbull and John Travolta Musician Pitbull and actor John Travolta are friends who, like many, exchanged texts and photos and jokes. Pitbull (whose real name is Armando Perez) would send the "Grease" star edited photos showing what he'd look like bald. [custom_adv] Jimmy Kimmel and Justin Theroux Kimmel hosted Theroux's bachelor party and officiated his 2015 wedding to Jennifer Aniston. Theroux even said Kimmel cried during the lovebirds' nuptials. [custom_adv] Adele and Jennifer Lawrence Lawrence and Adele met back in 2013 at the Oscars, where Lawrence snuck backstage to watch the singer perform "Skyfall." They've remained close ever since and have even spent Thanksgivings together. [custom_adv] David Beckham and Snoop Dogg Like his wife, David also has a friend you probably didn't know about. Snoop and David met again when the Beckham family moved to California from England. Since then, they've supported each other through it all. David even made an appearance on Snoop's TV show and Snoop has inspired some of David's new ventures. [custom_adv] Leonardo DiCaprio and Tobey Maguire This interesting friendship kicked off in 1990 when the two auditioned for the same role in a TV show. They reportedly agreed to help each other in the industry whenever possible, and their bond hasn't broken yet. [custom_adv] Katy Perry and Allison Williams Not only do they attend awards shows together, but singer Katy Perry and "Girls" actress Allison Williams say they're close enough to have best-friend telepathy. [custom_adv] Selena Gomez and Cara Delevingne Delevingne has a girl gang made up of what seems like every model and pop singer in Hollywood. She's known to hang out with a variety of celebrities, but one of her closer friends is the retired Disney Channel star. [custom_adv] Beyoncé and Gwyneth Paltrow Beyoncé and Paltrow met at an event in New York and kept in touch after that. Clearly, their friendship is true to its core. [custom_adv] Jennifer Aniston and Paul Rudd Aniston and Rudd first met when they co-starred in the 1998 movie "The Object of My Affection." They remained close friends, working together again when Rudd joined the "Friends" cast as the side character Mike Hannigan in 2002. [custom_adv] Sienna Miller and Keira Knightley Miller and Knightley have long been spotted on the red carpets together. The British superstars met in 2008 when they worked on "The Edge of Love" together. Knightley was struggling with a break-up when Miller suggested that they get drunk and make total fools out of themselves to get through it. Her advice worked and they've been close-knit ever since.