J.Lo on Mariah Carey: 'I Think She'll Enjoy It... I Did'
"Extra's" Terri Seymour met up with pop star Jennifer Lopez backstage at her concert in San Jose, where the "Dance Again" singer dished about her "American Idol" replacement, Mariah Carey, her surprise 40th birthday party with beau Casper Smart, and more!
J.Lo then commented on the surprise yacht birthday party her 23-year-old BF threw for her. "I didn't know all those people were coming in, I just thought we were going to a nice dinner."
Watch to find out J.Lo's secret to staying young and if she's ever have plastic surgery!