Our favorite leading ladies are having a blonde moment! While former-blonde Sarah Paulson is going dark, Girls star Allison Williams is slaying the March issue of Allure with lighter locks, and Olivia Wilde just showed up to an event with a major hair color makeover.

Olivia Wilde

The Vinyl actress, 32, debuted a blonde bob with dark roots at an event in New York to unveil Tiffany & Co鈥檚 latest collection, Tiffany Hardwear (Yep, the same collection featured in Lady Gaga鈥檚 Super Bowl commercial). Olivia showed off her hair wearing a double-breasted Ronald van der Kemp pantsuit, Sergio Rossi heels, and Tiffany earrings, bracelets and rings from Hardwear.

She shared her new look on the 鈥榞ram, saying 鈥淥h, what鈥檚 up, BLONDE LIFE?鈥

Oh what's up, BLONDE LIFE 馃

A post shared by Olivia Wilde (@oliviawilde) on

Olivia and her new hair celebrated the collection with famous faces, including Christina Ricci, Karolina Kurkova, Hari Nef and Kata Mara, who, coincidentally, was sporting a similar 鈥榙o.

Olivia poked fun at their matchy matchy styles on Instagram, captioning a pic of them with, 鈥淲hen you roll up to the party with your new look and it turns out you just single white femaled your friend you haven鈥檛 seen in a year. 馃槀 So fun checking out the new #TiffanyHardWear collection tonight. Thanks for having us @tiffanyandco! #TiffanyPartner#iloveyoukatemara

But it鈥檚 all love between the two ladies, especially with hair this good. Kate replied to Olivia via Twitter granting her 鈥減ermission to #singlewhitefemale me anytime.鈥

Olivia cut her hair back in December to distance herself from 鈥淢elania hair,鈥 and we鈥檙e loving the updated, fresh color even more!

What say you? Do you love Olivia鈥檚 new hair? Tweet us @BritandCo!

(Photo via Angela Pham/BFA.com)