Miley Cyrus Headlines and Asslines iHeart Radio Festival (Along with Katy Perry, Avril Lavigne, and Ashley Greene)

You knew Miley Cyrus wasn't going to close up her dog and pony show act before iHeart, the biggest pop music spectacular of the year in Las Vegas each September. She put on quite the noteworthy performance, including several key see-through costumes and her now customary tongue wagging and twerking. The kids ate it up, as did many a gentleman ogler.

Joining Miley on stage in the diva category were Katy Cocktease strutting her wares and Avril Lavigne doing some kind of Twisted Sister homage or something. It didn't hurt that Ashley Greene showed up to announce and hang out in a loose bit of clothing. Life could be worse. Though it is hard to imagine worse music.

Here's a bunch of the sextastic ladies who made it out to Vegas for the red carpet as well, including Our Lady of Maria Menounos, the Kardashians and Jenners, naturally, and Courtney Bingham: