"No, no," responded bride-to-be Jennifer to a journalist who quizzed her on whether she had chosen a gown for her big day.
After her appearance at the film's debut screening Jennifer opened up about her relationship with Justin on the Ellen DeGeneres show.
"No, he does that to me," said Jennifer when Ellen asked if Justin played any practical jokes on her. "Well, he calls it trickery," she added. "But he's constantly hiding behind drapes. And I'm constantly scared. It's like it doesn't get old on me …"
Jennifer, 44, then addressed Ellen's questions about rumours a Friends reunion may be in the pipeline.
"Well, you're hearing it here first. As am I!" said Jennifer who played Rachel Green during the show's 10 year run.
"Did Matthew Perry start that?" Joked Jennifer. "Because he's getting some good airtime on this show. I've been watching."
There had been speculation that stars Jennifer, Matthew, Courteney Cox, David Schwimmer, Matt LeBlanc and Lisa Kudrow would reprise their roles for a revived series of the hit TV show next year, although an NBC insider later dismissed the reports.