Turns out, Alexis and Serena are expecting a little one of their own!
Serena teased the news on Snapchat, showing off her baby bump with the caption, "20 weeks," indicating that she's 20 weeks preggers:
Huge congrats to Serena and her growing family!
See Serena turn heads in FADER magazine with BET Breaks, above.
(Photo: Pascal Le Segretain/Getty Images)