beyoncehairsideboob.jpgBeyonce Knowles sunglasses pant suit black heels smiling ring

We rarely see Bey looking anything but perfectly coiffed, but Saturday in Paris, she was displaying mussed hair -- not to mention some side boob! -- while leaving the Hotel Costes with hubby Jay-Z (in the gallery below.)

Wearing a cute black jumper, Beyonce was beaming ear-to-ear as she was escorted out of the chic hotel. Must have been a great night!

Knowles, who recently released a new single, was in the French capital for a photo shoot for the cover of Harper's Bazaar. Let's hope they did something with her hair!