Robbie Montgomery net worth: Robbie Montgomery is an American businesswoman and former backup singer with an estimated net worth of $19 million dollars. Born in St. Louis, Missouri, Robbie Montgomery first achieved a modicum of fame singing backup for artists such as Tina Turner, The Supremes, Stevie Wonder, and James Brown. However, her lung collapsed and she was forced to leave her singing career behind. She opened a restaurant called, "Sweetie Pie's" in St. Louis, Missouri, serving family soul food recipes that had been passed down for generations. The restaurant became immensely popular, and has since opened two more locations. In October of 2011, the Oprah Winfrey Network began airing a reality series about "Sweetie Pie's" which features Ms. Montgomery, and her son Tim, who is also her business partner. The series follows the family as they prepare to launch their third location, and also touches on their personal lives. Robbie Montgomery is still searching for love at age 71, and her son has recently become a father, and is learning what that means.