Umm, how did we miss this over the weekend?!

The other day Fergie posted the above video on Instagram, which is a snippet from her new Calvin Klein ad. "Boom. #mycalvins," she wrote."

Apparently this is part of the company's new social media campaign, with celebs posting sexy selfies (and videos) under the hashtag #mycalvins. Miranda Kerr and Trey Songz Instagrammed some pics the other day, but so far this is the first video. Yum!