FIRST LOOK: MANGO HOLIDAY

Stunt casting is nothing new, even with fast fashion brands. In the past few months, we've seen blogger Rumi Neely model for Forever 21, fashion editor Anna Della Russo charge the Lanvin x H&M runway, and Isabel Lucas pose for the Gap.

Now it's Olivia Palermo's turn with Mango, the Spanish brand whose past faces include Leigh Lezark and Scarlett Johansson.  They've picked the reality TV villainess to front their holiday collection (along with a few "regular" models) and flaunt their new heaps of sequins and tulle.

But has MTV made Olivia look like an untouchable ice queen? Or someone whose outfits you want to steal?  Check out the clothes - and the starlet's glamorous photos - and let us know.