Jennifer Lopez finally joined to the mum-to-be club! The baby bump she sported during her justsweet show during NY Fashion Week really said it all.

In Touch reports that Jennifer had an ultrasound performed in a New York office on September 12. “The test calculated that she was about 12 weeks pregnant,” an insider says. “She’s due in the spring.”

The tab even goes so far as to say the happy event is the successful result of in vitro fertilization “” in other words, there’s a possibility she’s having twins!!!