Britney Spears Believe isn't the only forthcoming scent with major star power behind it. Christina Aguilera is about to release her eponymous fragrance, while Beyonce is promoting Diamonds, the latest from Emporio Armani. Both of them are starring in new ads, of course.

Diamonds blends opening notes of litchi and raspberry with a heart of rose with freesia and lily of the valley. The woody trail features vetiver, cedar and patchouli, while the dry-down has an amber note.

Christina Aguilera (the fragrance) is an oriental floral with top notes of blackcurrant, a heart of peony and prune, and a base of vanilla. Oddly enough, Christina seems to be, uh, missing something in her ad. (Do you see it, too?)