The theme for the 2017 LOVE Magazine Advent Calendar is fitness, so far we have seen Alexis Ren working out her glutes in lingerie, and Bella Hadid swinging a sledgehammer in lingerie. The next installment features Kate Upton, with her legendary cleavage on full display, playing tennis in a one piece and high heels. You have to wonder how practical this outfit is for tennis, it’s got to be tough to return a serve wearing high heels, especially on clay courts. But who cares? Kate Upton looks fantastic on the tennis courts and we could watch her smack balls around all day long.