Tennis star Serena Williams announced via social media on Wednesday that she gave birth to a girl named Alexis Olympia Ohanian Jr.

Williams posted about her baby on Instagram and Twitter accounts and is heard saying in a video, “We had a lot of complications, but look what we’ve got.”

The 35-year-old Williams said in late December that she was engaged to Reddit co-founder Alexis Ohanian.

Williams wrote Wednesday that their daughter was born on Sept. 1 and weighed 6 pounds, 14 ounces. One posting also says about the newborn, “Grand Slam Titles: 1.”

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