Serena Williams Reveals Planning Friend Meghan Markle's Baby Shower Took 'a Lot of Effort'

Serena Williams may be busy, but she always makes sure to prioritize her friendship with Meghan Markle.

As Meghan, 37, prepares to welcome her first child with Prince Harry any day now, Williams opened up to Business of Fashion about what it took to ensure that her pal’s baby shower back in February was everything she hoped for and more.

“Planning something like that takes a lot of effort,” Williams, 37, told the publication of hosting the New York bash. “I’m a perfectionist, so I’m like, ‘Let’s make it perfect.'”

“It’s been a lot the last few days,” Williams, who sat down with the Business of Fashion just after the shower.

Serena Williams and Meghan Markle | Ian West/PA Images; Samir Hussein/WireImage
Serena Williams and Meghan Markle | Ian West/PA Images; Samir Hussein/WireImage

RELATED: See Every Photo from Meghan Markle’s Whirlwind Baby Shower Trip to New York City

The tennis star helped her pregnant pal throw the event at The Mark Hotel.

Guests at the shower — which was also attended by Amal Clooney, Gayle KingJessica MulroneyMisha Nonoo and Abigail Spencer — were treated to a flower-arranging class and plenty of delicious food.

During that trip, Williams also stepped out for a fancy dinner at Ralph Lauren’s restaurant The Polo Bar with Meghan and their mutual friends Mulroney and Markus Anderson.

Meghan Markle and Serena Williams in New York City in February | Gotham/GC Images; Felipe Ramales / Splash
Meghan Markle and Serena Williams in New York City in February | Gotham/GC Images; Felipe Ramales / Splash

RELATED: Serena Williams Reveals Why She Told Pal and Mom-to-Be Meghan Markle to ‘Stop Being so Nice’

Williams and Meghan have been friends for some time, first meeting at the Super Bowl in 2010 where they immediately hit it off. Last May, Williams attended Meghan and Harry’s royal wedding.

Williams previously told PEOPLE that Meghan hasn’t changed one bit — despite juggling her busy new role as a royal while being pregnant for the first time.

“I’m like, ‘How are you?’ and she’s like, ‘No, how are you?’ and I’m like, ‘You’re so sweet, but I’m really asking – how are YOU?’” she said. “I’m like, ‘Meghan, stop being so nice…you’re the pregnant one, aren’t you supposed to have hormones, why are you so sweet?’ But that’s always been her.”

The star athlete also shared that while she is giving the Duchess of Sussex plenty of advice from one new mom to a soon-to-be parent, Meghan “still gives me more advice.”

Most recently, Williams, who has a 19-month-old daughter Alexis Olympia, made sure that Meghan was ready for motherhood by sending her diapers across the pond — though she didn’t think the Duchess of Sussex would need much help as a new parent.

“She’ll be the best mom, for sure,” the athlete told E! News earlier this month.

Meghan Markle and Serena Williams | Kevin Mazur/Getty Images
Meghan Markle and Serena Williams | Kevin Mazur/Getty Images

RELATED: Serena Williams Reveals She’s Already Sent Diapers ‘Across the Pond’ for Mom-to-Be Meghan Markle

While speaking to E! News, Williams may have also accidentally hinted that Meghan and Harry are having a girl when she discussed an unnamed pregnant friend..

When asked about advice she had for fellow parents, the tennis star said, “Accept mistakes and don’t expect to be perfect. We put so much pressure on ourselves.”

She then added, “My friend is pregnant, and she was like, ‘My kid’s gonna do this,’ [and] I just looked at her like, ‘No, she’s not. No, you’re not. She was like, ‘I need to talk to you about tips,’ because, yes, I had all of those high expectations.”

Though it was unclear what friend Williams was referencing, there is a possibility that it may be Meghan, even though the royal previously said that they didn’t know if they were having a boy or girl, adding that they wanted it to be a surprise.