Summer Tour Style: Katy, Taylor, Lady Gaga & More!

What happens when style hits the road? See who heated up their tours in everything from haute couture to down-home denim shorts

BRITNEY SPEARS

She might be the ring master, but for her sexy "If You Seek Amy" number, the singer ditches the Circus garb for a rhinestone-studded bra and furry shrug while performing in Finland.