Tom Cruise is 'growing closer' to his glamorous Russian socialite girlfriend - and has been regularly spending nights at her swanky London apartment, friends told Daily Mail.

According to reports, the 61-year-old Hollywood actor and Elsina Khayrova, 36, attended a glittering dinner in support of London's Air Ambulance Charity at the five-star Raffles Hotel recently.

A source told Daily Mail that the pair are now official, explaining: "It's well known within Elsina's circle that she and Tom are now an item."

"They've grown very close over the past few weeks but take a lot of care not to be photographed together because they want to maintain their privacy," the source said.

The source continued: "Tom has been staying the night at Elsina's apartment, which as you can imagine, is a very beautiful place. They enjoy hanging out together and despite their wealth, do a lot of the things that normal couples do."

They reportedly met for the first time last year in December during a party in Mayfair.

Cruise and his previous marriages

Cruise was married thrice earlier.

He was earlier married to Mimi Rogers from 1987 to 1990, Nicole Kidman from 1990 to 2001 and Katie Holmes from 2006 to 2012.

Khayrova separated from her ex-husband Dimitry Tsvetkov, 43 last year.

Reacting to the development, Dimitry Tsvetkov told Daily Mail: "Irrespective of whoever she's with, Tom Cruise or anybody else, they should be aware that she likes the finer things in life and has expensive and luxurious taste. Tom should keep his eyes and wallet wide open."