Tennis star Serena Williams is on vacation in the Bahamas, and showing off her fit bikini body to her Twitter followers.

Williams most recently won the U.S. Open in September. She is rumored to be dating French coach Patrick Mouratoglou.

After she won the tennis championship, Williams went to Paris and was spotted with Mouratoglou.

In her most recent vacation pictures, however, Mouratoglou is nowhere in sight, and Williams is instead seen enjoying her time with close friends.

"If it was anybody other than Serena on the other side of the court, I'm not sure we'd be talking now," Mouratoglou, who has been working with Williams recently, told the Associated Press after the tennis champ's U.S. Open win. "But it was Serena. She was there. She's a winner and she's a champion."

Days later, the two were snapped in the city of love, with their hands in each other's pockets, and embracing as they walked down the city streets.

This is not the first time Williams and Mouratoglou have been seen together in Paris. In June, they also sat next to each other at the French Open.

After winning the U.S. Open, Williams talked to the AP about dating following news another tennis player, Maria Sharapova, announced the end of her engagement to basketball player Sasha Vujacic.

"If I'm in a relationship, I'm fine; I do well. But I feel like when I'm out, I'm angry and I do even better," Williams said with a laugh. "I don't know what's better for me. It's a win-win situation."