Selena Gomez becoming big sister

Published: Nov. 27, 2011 at 5:31 PM

Singer Selena Gomez arrives at the 39th American Music Awards in Los Angeles

LOS ANGELES, Nov. 27 (UPI) -- American singer-actress Selena Gomez is going to be a big sister, the star announced on her Instagram account.

"Momma and Brian are finally letting me share the news," she wrote in the post Friday. "My mommys carrying my baby brother or sister :) I'm the happiest girl in the world!"

The singer, 19, accompanied the post with a picture of her mother, Mandy Dawn Cornett, and stepfather, Brian Teefey, People reported.

This will be the first child between Cornett and Teefey, who married in 2006.