Serena Williams kept it casual as she visited the Art Basel convention center in Miami Beach on Wednesday.
The tennis champion showed off her athletic physique as she donned a matching lilac Nike two-piece.
The sportswoman paired her shorts and quarter-zip with a Gucci fanny pack and multi-colored Nike sneakers.
The 42-year-old star completed the look with wide black framed sunglasses.
Serena attended Art Basel Miami Beach, known as the most comprehensive contemporary art fair in North America.
Serena Williams, 42, cut a sporty figure as she attended Art Basel in Miami with her glamorous sister Venus, 43, on Wednesday
The tennis champion showed off her athletic physique as she donned a matching lilac Nike two-piece
The fair runs from December 8 to 10 and showcases modern and contemporary art from 277 galleries.
Serena seemed in good spirits once inside the event, posing with friends as she enjoyed the VIP preview day.
Meanwhile, her sister Venus caused a storm later in the day when she turned heads at the Art Basel Miami Beach dinner at Cote Miami.
The tennis star, 43, put on a very leggy display as she donned a sparkling little black mini dress with a silver sequined moon and star sign pattern.
She showed off her ample cleavage in the square neckline dress as she styled her brunette locks straight over her shoulder.
Venus completed the look with a pair of black heels as she posed confidently with her hand on her hip.
It comes after Serena claimed her breast milk helped heal her sunburn.
The mother, who gave birth to her second daughter in August, recently took to TikTok to explain her unusual hack.
The sportswoman paired her shorts and quarter-zip with a Gucci fanny pack and multicolored Nike sneakers
The star completed her look with wide black framed sunglasses
Serena attended Art Basel Miami Beach, known as the most comprehensive contemporary art fair in North America
Serena looked cheerful as she walked around with her arm around entrepreneur Loren Ridinger
Serena was also joined by French photographer and street artist JR
The star was seen hugging her friend as she arrived for the VIP preview
Venus looked sensational in the evening for the Art Basel dinner
The tennis star, 43, put on a very leggy show as she donned a sparkling little black mini dress with a silver sequined moon and constellation pattern
Venus completed the look with a pair of black heels as she posed confidently with her hand on her hip (pictured with author Laura Shriftman)
Venus was also joined by her other sister, film producer Isha Price
Venus showed off her ample cleavage in the square neckline dress as she styled her brunette locks straight over her shoulder
Venus was seen talking to art dealer Marc Glimcher
She and Marc also posed next to Samanthe Rubell, the president of Pace Gallery
She dabbed the breast milk onto her under-eye, which was scorched by the sun, before revealing that 'it worked' to soothe the area.
But it seems some of her 1.6 million followers were unsure about her unique remedy.
In the clip, which has been viewed over 47,000 times so far, Serena wears a black crop top and matching pants.
The mother of two, who stepped out of the sporting spotlight last summer, speaks directly to the camera from her home in Los Angeles.
She begins, “So I'm all burned under my eye – don't ask…
'I have sensitive skin. I was in the sun. Long story. Anyway, I'm trying some breast milk.
'It works for my child. They say to put breast milk on everything and I have a lot of extra, so I'm going to try it under my eye for a week or so and see how it goes.'