Celebrity friends and family of the four-time Olympic gold medalist flooded the comment section, cheering on the tennis star's surprise appearance. Former NBA star Dwyane Wade commented fire emojis, while Serena Williams' sister Venus Williams commented "You did that!!! 💙✨"

Tennis star Serena Williams made a surprise cameo during rapper Kendrick Lamar's halftime performance at the Super Bowl on Sunday, showcasing her crip walk - a dance move that originated in Los Angeles.

Even Venus Williams is obsessed with Kendrick Lamar's Super Bowl halftime show — but in her case, it's personal. Hours after the rapper made waves with his explosive performance, the Olympian took to social media to applaud her sister and fellow tennis superstar Serena Williams,