The 19-year-old took to Twitter to announce that she’s going to be a big sister.
“Momma [Mandy Teefy] and [step-father] 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!” she wrote on the micro-blogging site.
To accompany her Tweet, the 19-year-old posted a photo of stepfather gently touching her mother’s belly.
The baby is expected to arrive in the spring of next year and Selena will actually be a half-sister since her mother has been married to Brian Teefey since 2006.
Selena’s father divorced Mandy in 1997.