New Delhi, July 30 -- Liam Neeson and Pamela Anderson are officially a couple, PEOPLE confirms. The actors, who star together in the upcoming comedy 'The Naked Gun', have developed a "budding romance in the early stages," according to a source close to the production.

"It's sincere, and it's clear they're smitten with each other," the insider told the publication.

The 73-year-old 'Taken' star and the 58-year-old 'Baywatch' icon have been spotted together repeatedly over the past few months, with their chemistry increasingly obvious both on and off the red carpet.

Most recently, Liam and Pamela walked hand-in-hand at the film's New York premiere on July 28, joined by their children. Neeson was accompanied by his sons Micheal (30) and Da...