But the actor and comedian – who has just filed for divorce from Katy Perry – couldn't help but looking a little down as he ran errands in London this week.
Russell is back home after spending Christmas with friends in Cornwall.
Meanwhile, his estranged wife was last spotted thousands of miles away, ringing in the New Year with her friends in West Hollywood.
Onlookers said Katy looked carefree and happy as she partied at Soho House, taking to the dancefloor at midnight.
Her good friend Rihanna had invited the Firework singer to go and stay with her in Barbados while she gets over the split, but the night out suggests Katy hadn't taken her up on the offer yet.
Twenty-seven-year-old Katy has not been photographed since last week, when she was on holiday in Hawaii for Christmas.
Russell is said to have spent New Year's Eve alone in his room at London's Savoy Hotel, before hitting the gym the next morning.
The teetotal star, who filed for divorce on Friday, stands to walk away from the marriage with half of Katy's estimated £45 million fortune.
The couple did not sign a pre-nuptial agreement before their 2010 Hindu wedding ceremony in India.
Russell, said to be worth £11 million on his own, is now apparently considering moving back to London.