More evidence that Jennifer Lopez and Marc Anthony are expecting twins, as the couple celebrated Jen's pregnancy with a pink and blue-themed baby shower this weekend.

Held on the rooftop of the Gramercy Park Hotel in NYC, Jen and Marc were surrounded by pals Leah Remini and designer Roberto Cavalli, who reportedly gave Jen what every baby girl needs -- a pink leopard-print crib. And nothing but the best for the mom-to-be, of course, as the party room was covered with Swarovski crystal.

A witness who saw Jen and Marc arrive said Jen "looked very pretty – and very pregnant."

I bet. Jen looked very pregnant at three months along. I wouldn't be surprised if there were four babies in there.