May 10 (UPI) -- Serena Williams posted a new bump photo Tuesday after attending her baby shower over the weekend.
The 35-year-old tennis pro showed off her growing belly in a series of snapshots on Instagram after celebrating her pregnancy with family and friends Saturday in Miami.
"Fun day out and about with @audemarspiguet," she captioned the post for her 5.7 million followers.
E! News reported Williams had "a fun-filled bridal shower" at 1 Hotel in South Beach. The mom-to-be's guests enjoyed champagne and "healthy bites," and "made sure to love" on the pregnant star's baby bump.
Williams confirmed in April that she's expecting her first child with fiancé and Reddit co-founder Alexis Ohanian. She later confessed she hadn't meant to share her initial post announcing the news.
"Well, actually it was an accident," the tennis pro said at a Ted Talks conference.
"On social media, you press the wrong button and..." she explained. "Thirty minutes later I missed four calls and I'm like, 'That's weird.' But it was a good moment."
Williams told Vogue at the 2017 Met Gala last week that she has yet to learn her baby's sex. She said she and Ohanian are keeping the sex a "surprise" and refer to their unborn child simply as "baby."