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Hey, when it's hot, and you're hot...
The 20-year-old model sported a skimpy black bodysuit that showed quite a bit of side boob and cleavage, paired with a black and white net-design mini skirt and gray and white sneakers.
Hadid and Jonas, 26, began dating at least a couple of months ago and have showcased several PDA moments. In July, they were spotted together at Disneyland.