Jennifer Lopez and husband Marc Anthony kicked off their tour together with a concert in Atlantic City, NJ on Friday. The couple performed their own songs seperately and at the end of the night sang two Spanish duets. Anthony opened the concert with Spanish hits and then Lopez took the stage. “How amazing was Marc?” she said after a few songs. “This is a really special night for us…This is my first tour ever! It’s been a really special year!” Lopez, who is rumored to be pregnant, changed outfits three times during the concert, every time a loose fitting top. Billowy dresses, tent-like tops, and a suspiciously round tummy led audience members to speculate whether Lopez had something to hide. “I don’t know why she would wear outfits like that if she weren’t pregnant!” one fan said, wrinkling her nose at the Roberto Cavalli-designed costumes. “I’d guess that she’s about four or five months along,” said another fan. “But man can she dance!”