Eva Mendes Reacts to Ryan Gosling's First Character Photo from 'Barbie' Movie: 'That's My Ken'

Eva Mendes couldn't be prouder of her doll Ryan Gosling.

The 48-year-old actress raved on Instagram Wednesday about her longtime partner's transformation into Ken for the upcoming Greta Gerwig-directed live-action Barbie movie, also starring Margot Robbie in the title role.

Re-sharing the snapshot posted by Warner Bros. Pictures earlier that day, Mendes wrote, "So. F. Funny. So. F. Good. So F excited for you to see this … "

In the image, Gosling, 41, sports platinum locks (and a killer six-pack!) as he poses in all light-wash denim, including an open vest and matching jeans, in front of a hot-pink backdrop. And to top it all off, a pair of white boxers stitched with "KEN" can be seen peeking out from above his jeans' waistline.

Mendes concluded her caption, "#Thatsmyken."

#BARBIE
July 21, 2023
Only in theaters pic.twitter.com/mauCGpizD1

— Warner Bros. Pictures (@wbpictures) April 26, 2022

As part of CinemaCon held in Las Vegas in April, Warner Bros. Pictures shared a first-look image of Robbie, 31, in the role of the iconic Mattel doll, along with a release date for the film: July 21, 2023.

An accompanying image in the social-media post showed Suicide Squad star Robbie rocking a retro '60s vibe, dressed in a blue-and-white polka-dot headband and matching striped halter top.

She smiled as she leaned forward in a pink Chevrolet Corvette convertible, posing in front of a pink faux stone backdrop. Robbie wore a beaded bracelet and had her blonde hair done in a straight style evocative of the classic American doll.

Aside from Robbie in the title role and Gosling as Barbie's main squeeze, the film will also star Issa Rae, Will Ferrell, Kate McKinnon, Simu Liu, Michael Cera and America Ferrera.

Mendes and Gosling are fairly private when it comes to their years-long relationship and two daughters Amada, 6, and Esmeralda, 7½, but the Place Beyond the Pines actress recently gave PEOPLE a peek into their domestic dynamic.

"Ryan's the cook. He's an incredible cook," she said last month. "I think that there's a really nice balance to 'You cook, I clean.' And it just works for us."

She also told Forbes in an interview published last month that "it's a team effort" between herself and Gosling in raising their daughters: "Hopefully it's showing my girls that there are no gender-specific roles that one must take on and that we are partners in this and that we're all partners in this, not just Ryan and I, but our children as well."

"It's a team effort every day, so if they see him and I switching off doing certain things that again aren't specific to stereotypical gender things, I think that just creates balance and harmony," Mendes added.