They might be counting down to impending parenthood but that hasn't stopped George and Amal Clooney, who are expecting twins together, from celebrating a pretty big milestone.
Over the weekend, the human rights lawyer rounded up the actor's nearest and dearest as he rung in the big 5-6 on May 6 with a surprise party at their London home.
According to E! News their besties Cindy Crawford and Rande Gerber flew in from LA to help Amal prepare for the event.
"Amal set it all up, and Rande and Cindy surprised George when he got home Saturday," an insider told the website.
Before revealing that when the birthday boy arrived in his driveway, Rande "came from around the bushes driving George's lawnmower and pulled up beside George's car while Cindy was nearby in the garden cutting fresh flowers."
Going all out for her husband, the pregnant beauty ordered a bespoke cake which paid homage to his Casamigos Tequila brand.
The hilarious creation shows George and his business partner Rande in figurine form enjoying their tequila.
"Celebrating our Birthdays @casamigos style. Thanks for the cool cake Amal. #houseoffriends," Rande, who turned 55 at the end of April, penned alongside the snapshot.
Supermodel Cindy also shared a shot from the birthday festivities showing her and Rande cuddling up on a boat on the Thames while George rears his mug into the shot.
"We can always count on him for the photobomb," she joked.
"Amal had everyone come for dinner and to drink Casamigos. She also had this great cake made replicating the Casamigos Tequila bars from their houses in Mexico," the pal explained to E! News.
"George had the best time celebrating his birthday with his best friends, and he was genuinely surprised. Rande and Cindy are proud they were able to keep the secret!"
No doubt it's a good chance for the couple to catch up with their mates before they welcome their babies next month.
Speaking of becoming a dad, the former bachelor told E! in March it was the ultimate blessing.
"I didn't know that we'd have kids. I was very happy that we were going to get married and then [a pregnancy] seemed like the next step."
"I've had friends pick out names around their parents and then it becomes... Whatever name you pick they're like, 'Oh, I don't like that. That guy's a prime minister…Can't name her Susan. You remember your Aunt Susan?'"
Whatever names they pick, there's no doubt a world with mini Georges and Amals (squared!) is a good world indeed.