To the world, they’re a tennis superstar and an actress-turned-royal. But to each other,Serena WilliamsandMeghan Markleare just good friends swapping pregnancy tips.

At Wednesday night’s launch for her clothing lineSerenaduring Art Basel in Miami, the sports icon told PEOPLE that Meghan hasn’t changed one bit — despite juggling her busy new role as a duchess while being pregnant for the first time.

“I’m like, ‘How are you?’ and she’s like, ‘No, how areyou?’ and I’m like, ‘You’re so sweet, but I’m really asking – how are YOU?’ ” said Serena. “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.”

Williams, who welcomed daughterAlexis Olympiawith husbandAlexis Ohanianin Sept. 2017, 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.”

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But the tennis legend’s best piece of advice to first-time moms? “It will come.”

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RELATED VIDEO:Serena WilliamsGives Her Best Wedding Advice For FriendMeghan Markle: ‘Eat Cake!’

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The wedding of Prince Harry and Meghan Markle, Pre-Ceremony, Windsor, Berkshire, UK - 19 May 2018

Despite Meghan moving to London for her new life as a royal, the pals have continued to support each other. Serena was on theguest list for Meghan and Prince Harry’s royal weddingin May, andMeghan cheered on the athlete at Wimbledonover the summer alongside sister-in-law Kate Middleton.

Samir Hussein/WireImage; Serena Williams/Instagram

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“The face you make when you and Meghan have matching@serenablazers 😍,” Williams captioned an Instagram post with a photo of herself modeling the blazer with a big smile across her face.

source: people.com