Olivia Wilde Debuts Blonde Bob, Becomes Kate Mara's Hair Twin

Olivia Wilde and her new “hair twin” Kate Mara share a laugh while attending Tiffany & Co.’s celebration of the Tiffany Hardwear Collection on Tuesday (February 7) at The Standard in New York City.

Other celebs who stepped out for the event included Dove Cameron, Christina Ricci, Karolina Kurkova, and Lindsay Ellingson.

Olivia showed off her new blonde bob haircut at the event!

“When you roll up to the party with your new look and it turns out you just single white femaled your friend you haven’t seen in a year. 😂 So fun checking out the new #TiffanyHardWear collection tonight. Thanks for having us @tiffanyandco!” Olivia wrote on Instagram.

“With my hair twin @oliviawilde ❤️ Thanks @tiffanyandco for the hot date,” Kate replied on Twitter. “.@oliviawilde permission to #singlewhitefemale me anytime 🤗.”

FYI: Kate is wearing a Michael Kors Collection outfit and Tiffany’s jewelry. Olivia is wearing a Ronald Van Der Kamp suit, Sergio Rossi heels, a Lili Radu clutch, and Tiffany’s jewels. Dove is wearing a Ted Baker London dress and Miu Miu shoes.