Everyone wants Blake Lively's hair. Whether she's dressed up and looking line a million bucks, or dressed down and looking like she just got out of bed, those long, blonde locks look fabulous either way. Now that's a good head of hair!

While her character on Gossip Girl, Serena van der Woodsen, is more likely to choose a glamorous hairstyle (and cleavage-baring dress) everywhere she goes in New York, real-life Blake, a SoCal girl, often opts for an unbrushed, messy look.

And you know what? We love them both. She's very pretty.

Which look suits the Gossip Girl beauty best? Vote below!

Blake Lively's hair looks best when it's ...