Whose bikini butt?This celeb bottom is absolute perfection.

We could get jealous and have a moan, but we're made from nicer stuff than that.

So instead we challenge you to a game in which you need to identify a heap of celebrity derrieres.

Beginning with this fine example of a first-rate botty.

We imagine this has been crafted from some serious hours in the gym and a fair few lotions and potions.

So we don't blame her from choosing the tiniest of bikini bottoms to proudly sport her wares.

But who's the chicky to do the flaunting?

Dive in and test your posterior knowledge in our gallery of mystery beach bums below.