Kelsey Grammer has had wife Kayte Walsh's name tattooed on his stomach.

The 57-year-old former 'Cheers' star - who married flight attendant Kayte in February 2011 - stunned customers at a Insight Studios tattoo parlour in Chicago on Saturday (14.04.12) when he walked in and asked to be inked.

Dressed casually with his fourth wife by his side, owner Bob Jones says the 'Boss' actor chatted with staff and other people waiting before opting for a ￡37 tattoo on his waistline.

Bob told the Chicago Sun-Times newspaper: "He was pretty cool about it. He said it was his first tattoo and he did some research and said, 'You guys seemed to be the best place to go'."

But one 21-year-old employee failed to recognise Kelsey and asked to see his identity.

Bob continued: "She said, 'Can I get your ID, please?' He was like, 'Huh?' She came back to me and said, 'Is this guy famous or something? He looked at me kind of funny when I asked for his ID'."

Kelsey - who was previously married to 'Real Housewives' star Camille Grammer - is now expecting twins with Kayte.

Announcing the happy news at the Golden Globe Awards in January, he said: "I'm really looking forward to meeting these new arrivals in our lives."