The late late Lo

ONLY Jennifer Lopez can be a showstopper when she’s not even in the show. The superstar — who is getting married to Ben Affleck in a second ceremony on Saturday — caused a stir, we’re told, when she arrived a full 20 minutes late for a performance of “Into the Woods” on Broadway. The “Jenny From the Block” diva arrived with kids (a “mix of her own and Affleck’s,” according to a spy) in tow, decked out head-to-toe in “eye-catching” pink and purple sequins. “The entire audience turned to watch,” a fellow audience member told Page Six, adding, “Well, everyone except for Patti LuPone [who was seated three rows in front of Lopez], who seemed militantly unimpressed by the spectacle.” The source says that despite her tardiness, Lopez got swept up in the show. She “kept dancing in her seat — even to ballads — and applauding loudly with her hands up over her head.” After the show, she and her brood were ushered by security into an awaiting Sprinter van. Before departing, she popped out of the van’s door and blew kisses at the throng of fans. As Page Six reported, Lopez and Affleck are having a big, splashy wedding celebration this weekend, one month after tying the knot in Las Vegas.