There's a way to liven up the red carpet, then there's a way to blow it up. Michelle Monaghan blew through the premiere of Up in LA. Her technicolor Peter Som dress and cotton candy pink Casadei heels were perfect for this lighthearted event and look especially sweet against the balloon backdrop. But no need to walk a red carpet to get Michelle's sassy look. Just remember to limit your technicolor to one item — otherwise you'll end up looking more raver, less glamour girl.