Apparently showing skin is very in. Then again, if you're a hot, young starlet, showing skin has always been in.
The Pretty Little Liars actress went summery with a sleeveless style and floral bottoms, while the X Factor judge's look has more of a Stevie Nicks-at-a-nightclub vibe. Her Raquel Allegra design is sexy, but also not very youthful.
Our vote is for the Lucy's look. But what's your take?