Serena Williams' Daughter Goes Crazy After Getting Halle Bailey's 'Little Mermaid' Doll

Safe to say Serena Williams' 5-year-old daughter is a big fan of "The Little Mermaid" ... Olympia LOST IT after she got a Halle Bailey "Ariel" doll, and the entire adorable reaction was captured on video!

The video, which was shared on Olympia's Instagram, shows dad Alexis Ohanian handing his daughter a package from Amazon.

"Momma and poppa wanted to get this for you," Ohanian said.

When Olympia realized it was Bailey as Ariel, she (literally) jumped for joy ... and started screaming hysterically.

"Yay! 'Little Mermaid!'" Olympia yelled. "Thank you!"

Olympia explained it was her first LM doll ... and even broke down how she was going to play with Ariel for Mom and Dad.

The 2023 live-action version of "The Little Mermaid" has been a hit at the box office ... with Bailey recently celebrating the movie being number one in the world.

The movie reportedly grossed over $164 million globally over Memorial Day weekend, according to Deadline.

Of course, Olympia also made news a few days ago, losing it when Serena told her she was going to be a big sister!

The 23-time Grand Slam champ said Olympia had wanted a baby brother/sister ... and she's finally getting her wish.