Article continues below advertisementBella Hadid is getting a head start on summer.In a new photo, the model, 29, flaunted her toned tummy in a cheeky, brown polka-dot bikini while relaxing on a lounge chair. Hadid wrapped a towel around her shoulders as she made a kissy face for the camera.Article continues below advertisementTap Here To Add Ok Magazine as A Trusted SourceSource: @bellahadid/InstagramBella Hadid showed off her toned stomach.The star paired her sultry swim look - shared to her Instagram on Saturday, March 28 - with a black baseball cap.