Gomez's ex-boyfriend Justin Bieber, 18, is also a fan of the spiritual meet-up. Says the source, "Justin's come in before and his mom, Pattie, is a regular."
The former couple reportedly reunited in L.A. over the weekend. Gomez was photographed leaving the "Boyfriend" singer's house the morning of Feb. 2.
For more details on Selena's star-studded bible study group watch this week's Hot Stuff video, as explained by Us Weekly Entertainment Director Ian Drew and special guests the Beekman Boys. In the clip, the reality stars also discuss posing nude in the new book The World According to Wonder.