Blake Lively was in superhero mode ... there's really nothing you can't do in a ponytail. Marvel, are you paying attention? More celebrity hair inspo: Now, watch Brooke Shields' go-to beach ...

Why pick one style when you can do both? Can't decide between ... up the Pinterest-popular braided messy ponytail with some hair jewelry as Blake Lively did on the red carpet.

Forget visiting the hair salon to get the perfect Jennifer Aniston, Blake Lively or Jennifer Lopez ... The trick, known as the "ponytail blowout", is already racking up millions of views on ...