11/04/2011 at 05:00 PM EDT
, who announced she was expecting
with husband Jay-Z at the August MTV Video Music Awards, has remained mum on the sex of her baby.
But the secret seems to be out! Sources have referred to the upcoming arrival as "she" to PEOPLE, and former Destiny's Child bandmate Kelly Rowland
alluded to the baby's gender at an awards show Thursday night. Rowland told Bang Showbiz
: "I have no idea what I'm going to buy Beyoncé at the baby shower because Jay is going to buy that little girl every single thing possible."
The mini Sasha Fierce, due in February
, will be the couple's first child.
"I feel like it is time," the singer, 30, previously said of her pregnancy. "I'm so happy."