It's on, Kate Upton.
With this Sports Illustrated Swimsuit Edition cover girl drawing all the attention this week, Victoria's Secret model and ex-Transformers star Rosie Huntington-Whiteley is sending a very clear message in a new Instagram photo:
Two can play at this hot game!
Yes, Huntington-Whiteley is topless in the above photo, which she shared with followers yesterday, along with the caption: "Loving my @chercoulter jeans for @agjean."
Wait, Rosie is wearing jeans in this picture? Who knew?!? That's not exactly where our attention is focused.