Bronx-bred Boriqua Jennifer Lopez plans to “announce that she and (husband) Marc Anthony are expecting their first child on Saturday night at her Madison Square Garden concert,” according to moles at the New York Post. And Springtime will may two times the diaper changes for Marc and Jenn. The National Enquirer claims the couple are expecting fraternal twins, one boy and one girl.

“Marc wants to name their daughter after his mother, Guillermina-and they’re toying with English versions of the Spanish name, which loosely translates to Wilma or Wilamina.”

“Because Marc already has two sons, Jennifer will choose the name of their baby boy,” says an Enquirer insider.

A spywitness at J. Lo’s Wednesday night concert in Conn. told the NYP, “a fan blew the side of her top all the way up for a moment, and a definitive baby bump was there. She was very quick to push down her top. Then she talked about how this year is full of firsts for her . . . and every so often her dress would fly up and you would see her belly.”