Jennifer Lopez is dancing again on our continent! The singer kicked off the North American leg of her tour in Montreal this weekend with her co-headliner Enrique Iglesias. "You know I’m ready!" Lopez Tweeted in anticipation of her Canadian show. "Here we go!" Check to see when their mega-concert (complete with Zuhair Murad custom-made costumes) rolls through your town at jenniferlopez.com, and stay tuned into all of her stage news with her newly-launched Tour Feed. Click through the gallery to see more stars at this weekend's hottest events.