You know when you get a song stuck in your head? I'm having a similar sensation with Jason Wu's flirty peplum dress. This catchy number's been on repeat since it came down the designer's pretty spring runway. I'm hooked on the retro style's woven houndstooth, bowed waist and bubblegum skirt. I've yet to get this hit off my mind, so until I do I'll just keep singing its praises.

$4,019; mytheresa.com

—Randy Miller, Associate Editor