How many Barbie-themed gifts do you think writer/director Greta Gerwig received for her 40th birthday on Friday?

Well, we know there was at least one — and it came courtesy of Ryan "Just Ken" Gosling himself.

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On Saturday, the official Barbie Instagram account shared a video of Gerwig being surprised at what looks like a Pilates class by a dancing flash mob.

"As Kens know…. Sometimes the only way to express your feelings is through song & dance!" the film's account posted. "Ken Ryan sent these special Barbies and Kens to start Greta’s birthday with all the feelings!!"

The video features a group of Kens performing choreography to Gosling's power ballad "I'm Just Ken" from the film, before being joined by some Barbies for Dua Lipa's soundtrack hit "Dance the Night". Gerwig is crying happy tears by the end of it, and the entire thing is very wholesome. The post tags BookAFlashMob.com, which is presumably where Gosling ordered the gift from.

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In fairness, Gerwig has many reasons to be crying happy tears after Barbie's success. As well as being well received by critics, the Barbie movie (along with Oppenheimer) has been breaking record after record at the box office.