Ryan Gosling wears 'E' necklace for Eva Mendes at 'Barbie' premiere

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Ken might be cheating on Barbie.

Ryan Gosling hit the “Barbie” premiere in LA Sunday, proudly showing off an “E” initial necklace to honor his partner, Eva Mendes.

Gosling, 42, got into the spirit of the movie by donning a dapper Barbie-pink Gucci suit paired with the heartwarming pendant in the doll’s classic font.

Margot Robbie (in character as 1960’s Solo in the Spotlight Barbie), Dua Lipa (dressed in see-through Bottega Veneta), Issa Rae, America Ferrera and director Greta Gerwig were among the other stars on the pink carpet, with many similarly rocking bubblegum-colored looks.

Fans loved how Gosling creatively showed his adoration for his wife, with many crafting TikToks praising the sweet accessory.

Celebrity stylist Mark Avery, who dressed Gosling for the premiere, shared a snap of his client’s look on Instagram and thanked Hollywood 3D Printing for helping him “achieve the Barbie E.”

“The chain is everything!!! 🥹🥹🥹🤍 So so adorable!!! I adore them!!” one fan account raved in the comments, as another called it his “best look yet.”

A third person tweeted, “He loves that lady so much omg. They’re so cute when they’re together,” as another responded, “i totally respect their privacy but i’m also like *paws* i wanna see you guys more.”

While Mendes wasn’t on the carpet with him, she was there in spirit, as the “Notebook” heartthrob praised her and their daughters – Esmeralda, 8, and Amada, 7 – for their support while filming.

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Mendes and Gosling keep their relationship private and rarely appear on red carpets together. However, the 49-year-old actress gushed about Gosling last week in an Instagram post praising his acting skills.

“Mi Hombre. Mi Vida…To say he’s the greatest actor I’ve ever worked with is an understatement,” Mendes wrote alongside stills from their 2012 film, “The Place Beyond the Pines,” as they met on set.

Fittingly, Gosling appears to be just as devoted to Mendes as Ken is to Barbie.