Williams posed with Carey and her adorable twins after the singer’s concert in Florida on Thursday.
And, of course, fans were quick to spot Williams in Mariah Carey’s latest Instagram post, where the tennis superstar posed with the iconic singer and her twins, Moroccan and Monroe.
“With the beautiful @serenawilliams backstage tonight,” Carey wrote, sharing the photo Thursday night after a concert in Fort Lauderdale, Florida.
Carey is currently on tour until October, taking a break before heading out on a Christmas tour in December.
Williams is gearing up for the arrival of her little one. Both Williams and Ohanian have been tight-lipped about the sex of their baby, but the tennis pro recently threw a '50s themed baby shower, which included guests like Ciara, La La Anthony, Kelly Rowland, Eva Longoria and Angie Beyince.
Ohanian, however, has predicted that the couple might be having a baby girl. During a visit to Jimmy Kimmel Live, he said, "[Serena] won the Australian Open while pregnant. And she remarked that she feels like it has to be a girl because everything that that baby went through and handled like a champ, only a woman could be strong enough to take on.”
He added, "I have to admit, I was very lucky to be raised by a strong amazing mother and I mean, she’s got a good point."