That would be her best friend, living tennis legend Serena Williams.
Speaking to Business of Fashion just before presenting at the Oscars in February, Williams, 37, said in an interview released Wednesday, "Planning something like that takes a lot of effort. I'm a perfectionist, so I'm like, 'Let's make it perfect.' It's been a lot the last few days."
Markle, 37, got some side-eye from royal experts for the extravagance of her baby shower.
She reportedly took a $100,000 private jet paid for by a pal in Toronto for the trip, and Williams is said to have paid the $75,000 per night for the expecting Duchess of Sussex's lodging and party at swanky The Mark hotel in New York's Upper East Side.
“A lot has been made of how much the shower has cost, but this is not being paid for by the taxpayers, but by her friends, so I really don’t see why anyone should have a problem with it,” royal expert Katie Nicholl said previously. “It is the case that a baby shower is more of an American phenomenon than a British one and I am told Meghan was very keen to have a shower and thrilled that her friends Serena Williams and Amal Clooney offered to host the party. They really pulled out all the stops and made it a fabulous celebration for Meghan.”
Markle and Prince Harry's baby is due in late April or early May.