Blake Shelton doesn't think Gwen Stefani's sneakers with his face printed on them are ''cute''.

The 'Hollaback Girl' hitmaker regularly wears her customised Vans skater shoes with her country musician beau's portrait emblazoned on them, and while the 41-year-old singer thought it was a sweet idea at first, he wishes she wouldn't wear them.

He confessed: ''I don't know where she got those damn things.

''I remember when she got them though.

''They shipped them to the house and I didn't even know what to think. I was like 'What is that?' and she goes 'Aren't they cute?'

''I was like 'I don't know how to answer that. That's my face.'

To me, they're not cute but I guess the idea [is].

''She wears them all the time though, it's funny. She walks around with my face.''

Blake - who has been dating the No Doubt frontwoman since 2015 - also revealed that his 48-year-old girlfriend gets annoyed when people say she copied his ''camo-wearing'' fad as she has worn camouflage items since she was a teenager.

Speaking to PeopleStyle, Blake - who is launching his own BS Clothing range at Macy's department store in New York - said: ''It's funny because when she and I started seeing each other the pictures of us would come out and she'd be wearing camo and the headline would say 'Blake Is Rubbing Off on Gwen - She Has Camo On'.

''She's like 'What the f**k? I've been wearing camo since I was 17 years old. Here's the pictures. Why are they saying that? No, I'm the camo girl. You're copying me!'''

The 'God Gave Me You' hitmaker also claims Gwen - who has sons Kingston, 11, Zuma, nine, and Apollo, three, with her ex-husband Gavin Rossdale - steals his baseball caps on a regular basis.

He said: ''If there's one thing that Gwen has started doing that she probably didn't do before is the baseball caps that she puts on, they have a little shape to them now.

''It's probably because it's my cap she grabs and puts on. She didn't mean to.''