One of Hollywood's most famous friendships just got a third.
BFFs Drew Barrymore, 38, and Cameron Diaz, 40, vacationed together in Tulum, Mexico, this week with another one of Hollywood's most famous leading ladies: 36-year-old Reese Witherspoon.
The three frolicked along the beaches of the exclusive Amansala Resort, where they also reportedly enrolled in the site's Bikini Boot Camp, which is "designed to help guests reconnect to themselves and nature through a combination of exercise, healthy eating, adventure, yoga, relaxation and pampering," according to the resort's website.
"They are at the resort for a girls-only getaway," a source told Radar Online. "And they are having a blast. No husbands and no kids!"
The getaway could not have come too soon for the gals. Both Drew, mother of daughter Olive, and mom-of-three Reese gave birth in September.
In fact, a source tells Us Weekly that the two have become quite chummy because of their little ones. "Reese and Drew have bonded over their babies and losing the baby weight," the source said.
[Related: Drew Barrymore removing all tattoos]
Cameron, who's said she may or may not have children, has mentioned before that Reese is one of her most trusted girlfriends. Last year, she referred to the Oscar winner as one of her two "soul sisters."
She also used the term to refer to Drew, whom she met in a coffee shop when Drew was 14 and Cameron was 16. They became so close after co-starring in the 2000 movie "Charlie's Angels" and its sequel that Drew's fiancé Will Kopelman asked Cameron for permission to marry Drew before he proposed!
Any chance we can swing an invite to their next vacay?
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