22 Celebs Who Are BFF On-Screen and Off

Delevingne and Rihanna met at a fashion event five years before they shared the screen in Valerian and the City of a Thousand Planets. Apparently, when they first met, Rihanna walked up to Delevingne and "slapped [her] on the bum." While their relationship has included fun and games here and there, the women also have a close bond: "No matter where either of us are in the world, we know we can just pick up the phone and unload on each other, and that we are always ready to listen or offer advice," Delevingne shared.

While the Stark sisters may have their beef on Game of Thrones, their real-life counterparts couldn't be closer. If you've peeked at either of their social media accounts, you know that the two of them are attached at the hip, and have been since day one of the series. Their bond is something truly special.

These two keep their friendship low-key, but they've worked together on five different movies! When Bateman received a star on the Hollywood Walk of Fame, Aniston was the one to give him the honor, and didn't hesitate to get a few jokes in here and there. She also called him her "partner in crime," and added, "he's one of the loveliest men to be around. He always gives you deep connection, full attention, authenticity, and some of the deepest belly laughs that I can remember. We are so very proud of you."

These two are so close, they even have a nickname for each other: huevos (or 'eggs', in Spanish). The actresses have been friends for more than 20 years. They starred together in Banditos, and Hayek hilariously was pranked by Cruz on an episode of Punk'd.

Fanning and Stewart have worked together on four films: three of the Twilight films and the Joan Jett biopic The Runaways. They've been close since meeting on the set of New Moon, and Fanning called her relationship with Stewart "one of the most special bonds in my life" at theELLE Women in Hollywood Awards.

These two first met when Barrymore was 14-years-old and Diaz 16, and bonded from there. They weren't given the opportunity to work alongside each other until Charlie's Angels, but that set in place a relationship that would last a lifetime. Diaz may have effectively retired from acting, but she'll still pop up on Barrymore's Instagram from time to time.

The best thing to come out of Dawson's Creek was the friendship between Williams and Phillips, and that is a fact. The two met on the set of the hit teen series and haven't left each other's side since. They regularly accompanying each other on the red carpet, appear on each other's social media, and Williams even said this about Phillips to People: "She's proof that the love of your life does not have to be a man! That's the love of my life right there."

This bromance began in 2002 when Fallon hosted the MTV Video Music Awards, and it was basically love at first sight for the pair. At the time, Timberlake was just about to break out from his time in NSYNC, and Fallon was still a Saturday Night Live castmember. Their relationship developed when Timberlake hosted SNL a few years later and the duo created the recurring sketch "The Barry Gibb Talk Show." Timberlake and Fallon have since become seemingly inseparable in the media, and Fallon even presented Timberlake with his MTV Video Vanguard Award with a speech so sweet, it'll give you a toothache.

Watts and Kidman have been friends for more than 25 years, and they’ll happily gush about each other. They’ve only worked together once, for 1991’s Flirting, but their friendship has withstood the test of time. “Naomi and I are very, very good friends and have maintained that through so many things,” Kidman told The Telegraph. “I think that’s really rare, particularly for actresses, and I take a lot of pride in that.”

We love a bromance! These A-listers have starred in several movies together, including the Ocean’s movies and the Coen Brothers’ comedy Burn After Reading. But what they're most notorious for is their never-ending prank war. We'll never forget the time Clooney covered Pitt's car with incriminating bumper stickers (“Small Penis Onboard” being the one that stands out the most).

The two Friends have made it last way longer than the show did! They met on the set of the hit '90s comedy and have been close ever since, with 20 years of friendship under their belts. They've stuck with each other through everything: marriage, children, divorces. Aniston is godmother to Cox's daughter Coco, and Cox was maid of honor at Aniston's wedding to then-husband Justin Theroux. When they said "I'll be there for you," they meant it.

Yes, Jack and Rose from Titanic have a relationship, but this one's purely friendship. The two have been buds for more than two decades at this point, and every time one of them is asked about the other, they can't help but gush. When Winslet accepted the Golden Globe for Best Actress in a Drama, she had nothing but the best things to say: "Leo, I'm so happy I can stand here and tell you how much I love you and how much I've loved you for 13 years...I love you with all my heart, I really do."

This one may be a little unexpected! Hathaway and Jackman first met when they were filming Les Miserables together, and they've had nothing but the best things to say about each other since. Jackman has said he loved Hathaway the instant they met, and Hathaway profiled Jackman for Time Magazine.

Fey and Poelher first met through the Chicago improv scene in the early '90s, and have been a support system for each other as they've made their way to Saturday Night Live and beyond. They've been SNL Weekend Update co-anchors, hosted the Golden Globes multiple times, been frequent collaborators, and have only become more exciting and hilarious as the years have gone by.

These two starred in Scream Queens together, and formed a bond outside of the Ryan Murphy hit. They’ve made regular appearances on each other’s social media for years.

They may have starred together in one of the best odes to female friendship of all time (Bridesmaids), but Wiig and Rudolph had known each other for 10 years before they made it. In fact, they met at the baby shower for fellow Bridesmaids star, Melissa McCarthy. One can only imagine what conversations between these two funny ladies are like.

The entire cast of Pretty Little Lies is close, but no pair seem as close as Benson and Mitchell. They're both best friends and former co-workers, and if you take a peek at either of their Instagrams, you're sure to see the two of them hanging out.