Fashionable tennis star Maria Sharapova looked right on-trend at an event for Evian's "Baby on the Inside" ad campaign, which focuses on embracing one's inner child, at Openhouse Gallery in New York City on Aug. 24.

The 23-year-old blonde wore 3.1 Phillip Lim sequined short-shorts, a white V-neck T-shirt, and a long black blazer. She completed her chic and edgy look with a Cole Haan Swan crossbody bag and lace-up booties.

Later in the evening, the athletic beauty changed into an Evian tee featuring a graphic print of a baby's body, part of the company's Live Young message.

On why she modeled for the Evian campaign, Sharapova said in a press release: "The idea of youth as a state of mind caught my attention. I took a great pleasure in revealing my 'baby inside'...I am a true Evian drinker and I really like this campaign as well as the idea behind it so it felt quite natural to join in."

In related news, see Serena Williams flaunt her toned body in Harper's Bazaar.