The "Stay" singer is in a white tank and black cap on her way to a late dinner in New York. The Host star is sporting a black tank and black driver's cap on her way to a morning water taxi in Venice, Italy. Ri-Ri's in sneaks, and Di is sporting sandals. So no, they're not identical, but they are sort of mirror images of each other!
That makes it tricky to decide which A-lister looks sexier in her dressed down style. Both are rocking some impressively short shorts, but the German beauty's peeping pockets may win out over the Bahamian singer's simpler cut. Then there are those tanks. It's hard to win out over a tight, white top, so that element goes to the Diamonds World Tour headliner.
So in the end, the hats become the tie-breaker. Is it the quirky black driver's cap or the cheeky "Teenage Fantasy" topper?
Our vote goes to Diane who is somehow pulling off that totally ridiculous headwear. What's your take?