Serena Williams is having a… ?!

The tennis pro and her husband Alexis Ohanian shared a special YouTube vlog on Monday documenting a recent gender reveal party — where they found out the sex of their second child in the cutest way possible!

The bash, dubbed the “our next great adventure” party, concluded a day of fun under the sun with family and friends. There was even a “splash” village for 5-year-old daughter, Olympia, to play in! And of course, her sister Venus and their father Richard were there for the festivities.

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After the sun went down, the group gathered around a cake to find out the sex — only Alexis had a trick up his sleeve! He pranked his wife and daughter by purchasing a yellow cake (instead of the traditional blue and pink inside) so that they’d think the reveal had been botched. He then treated them to a spectacular light show in which flashing blue and pink lights spelled out:

“GIRL!”

So cute!!

Ch-ch-check out the heartwarming moment (below)!

How exciting!

These two know how to do a reveal! They first announced they were pregnant at the Met Gala, after all! Reactions?! Sound OFF (below)!

[Image via Alexis Ohanian/Instagram & Serena Williams/YouTube]

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