Liam Payne has revealed that he wasn't sure about the unusual choice of name for his son.

The singer's girlfriend Cheryl gave birth on 22 March and the couple later shared they had named the baby boy Bear.

According to The Sun, Liam explained it was Cheryl who came up with the unusual moniker.

"I'm into more traditional names, the Mrs . . . she's more into more unique, original names that people will remember," he explained.

"It was her choice. I wasn't going to fight her about it, she's the one who's done all the work, isn't she?"

The former One Direction star is currently in the US promoting his new solo material and said he misses his son.

"We're always Facetiming and the other day he smiled at me for the first time, it was so special," he said. "I just want to spend every moment with him but she (Cheryl) is so great, she does everything on her own, she's been amazing."

The 23-year-old was attending Kiis FM's Wango Tango event in California on Saturday (13 May) night where he chatted with fans about the baby.

My close friends and family know there are very few times when I'm left speechless... wow! I'm incredibly happy to welcome our new baby boy into the world, it's a moment that I will never forget for the rest of my life and my favourite memory I have so far. I'm completely in awe of his incredible mother and how she has been the whole way through this, she's really made my dreams come true. We haven't named him yet but he's already capturing hearts including mine. I feel very blessed. Happy Mother's Day everyone!

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One fan tweeted: "Liam also said Bear was a mini version of him with Cheryl's eyes."

Cheryl and Liam confirmed the birth of their son, with Cheryl posting an Instagram photo of the first-time father cradling the baby in his arms.

Announcing the new addition to the family, he shared: "My close friends and family know there are very few times when I'm left speechless ... wow!

"I'm incredibly happy to welcome our new baby boy into the world, it's a moment that I will never forget for the rest of my life and my favourite memory I have so far ... I am so blessed," he added.