Nicki Minaj was spotted flaunting her cake for all to see on the set of "American Idol" yesterday.  Pics inside...

Nicki's booty pop or whatever she's using was on 100 yesterday as she made her way to "Idol" auditions in L.A.  She squeezed her cakes into a tight yellow contour mini dress and nude stockings and gold platform booties. 
Nicki's gearing up for the release of her new Lavender lipstick with MAC Viva Glam coming February 2013.  And the 2-night "Idol" premiere kicks off January 16th.  You ready?