Selena Gomez revealed some of her own "diva demands" to MTV recently, admitting that while on tour, her rider requests "incense, pickles always," and "I'll be honest ... ramen." She called her concert rider "boring." But she certainly hasn't had a boring past few days, E! notes. On a radio show Friday, she shot down rumors that she and Justin Bieber got back together, confirming that she is most definitely available. And she's going to be a big sister; her mom, Mandy Cornett, is pregnant and due to give birth next month, according to a source. (Gomez also tweeted a Mother's Day picture of her and her definitely-pregnant-looking mom, Radar reports.)