Motherhood must really have changed the artist formerly known as J.Lo.
Jennifer Lopez spent her 39th birthday "sneaking in" to the Broadway show In the Heights with hubby Marc Anthony Thursday.
"It was a quiet night. We were really looking forward to seeing this amazing show and being here in New York," Marc tells Ryan Seacrest of their low-key plans on the KIIS-FM morning show.
"[We] just finally got to sit in the audience and watch other people be nervous."