Is Selena Gomez going to be a big sister?

Selena's mom, Mandy Teefey, is pregnant! Yay! Selena spilled the news this past Mother's Day, when she tweeted a picture of herself holding her mom's tummy. Selena added, "Hope all the amazing moms had a great day! I have the best momma in the world :) I love you so much!" A few days later, more pictures were released that confirmed the news. The baby will be Mandy's second child. Selena is going to be the best big sister ever!