One's living it up on the West Coast in The Hills and one's a high-flying fashionista in The City, but one thing's for sure – they both have very distinctive styles. Not that you'd know it from the last week though, where it looks like they've both decided to indulge in a style swap. Olivia Palermo has traded in her signature knotted up-dos and short shorts for skinny jeans and long blonde poker-straight hair – standard Lauren Conrad – while LC appears to have morphed into Olivia, including darker locks, for the launch of her new book. Hmmm, who gets your vote?