Kylie Jenner, Jaden Smith reportedly dating

Is Jaden Smith, the 14-year-old son of actors Will Smith and Jada Pinkett Smith, dating 15-year-old Kylie Jenner, daughter of former Olympian Bruce Jenner and Kardashian-clan mom and manager Kris Jenner?

Us Weekly said Monday that singer-actor Smith, star of the 2010 remake "The Karate Kid," and reality-star and model Jenner were seen together having lunch at Caffe Nero in London's Piccadilly Square on Sunday. The magazine said Smith -- who was in the city to help celebrate the 19th birthday of his friend, singer Justin Bieber -- has been friends with Jenner for some time before reportedly dating her.

The debunking site Gossip Cop noted only that the two were seen having lunch, and that they had left the London restaurant Nobu on Saturday night accompanied by Will Smith.

The site added that last year tabloids had inaccurately linked Jaden with Kylie's older sister, Kendall, now 17.