J Lo's Big Annoucement?

If insiders are right, J Lo’s going to announce she’s expecting on Saturday night.

According to the New York Post newspaper, she’s going to reveal the good news after a show at Madison Square Garden.

An insider – who was at another of her concerts in Connecticut earlier this week -  also told the newspaper: "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."

It’s not the first time that rumours J Lo and her husband Marc Anthony are expecting their first child have surfaced over the last few years.

However she recently took the unusual step of coming out and point blank denying that she’s pregnant…after all, she would be the first to know. Right?