Selena Gomez to become big sister

Last Updated: Nov 26, 2011, 17:28 PM IST

Washington: Selena Gomez has stunned her fans with the announcement that her family is expanding.

However, it’s not the 19-year-old singer who is expecting a baby with Justin Bieber, but her mother who is pregnant, reports

“Momma and Brian are finally letting me share the news...My mommy’s carrying my baby brother or sister:) I’m the happiest girl in the world!!” Selena tweeted.

Selena’s parents divorced when she was just five. In 2006, her mother Mandy married Brian Teefey, this will be their first child together.