Latino pop superstar Paulina Rubio is pregnant with her first child, according to the singer's best friend. Socialite Liliana Sada Melo has told website that the Mexican pin-up and her new husband Nicolas Vallejo-Najera are set to become parents. She says, "She's been pregnant for a few months. I don't know exactly how many... She is very happy." Rubio recently attended Sada Melo's wedding to Ernesto Ibarra. The singer laughed off pregnancy reports earlier this year (07), telling reporters she first wanted to enjoy married life after exchanging vows with Spaniard Vallejo-Nagera in April (07).