Natasha Hamilton has revealed she can't wait to have her fifth child with fiance Charles Gay - but wants to get married first.

The Atomic Kitten star got engaged to the fashion brand director in New York last year - following a whirlwind romance.

And now the couple have spoken about their eagerness to extend their family, after falling head over heels for each other.

The popstar is already mother to sons Josh, 14, Harry, 12, Alfie, six, and daughter Ella, two, from four previous relationships.

Natasha spoke to OK Magazine about the couple's plans.

She said: "It鈥檚 something we would both like in the future but not until after we鈥檙e married. We have a lot to sort out before we can consider having a baby."

Natasha Hamilton and Charles Gay

Natasha and Charles revealed to OK that they鈥檇 waited six months before introducing the children to Charles and now they all get on 鈥渂rilliantly鈥?with their future stepdad.

Charles said: 鈥淚 come from a big, close family and I鈥檝e always wanted loads of kids.

鈥淚t was very important to us both that I didn鈥檛 meet them until everyone was happy and we were sure our relationship was going somewhere. Tash is a great mum.?/p>

Natasha added: 鈥淚 told him about the kids straight away so he always knew they were a part of my life.?/p>

Natasha Hamilton with Charles Gay

The couple said Charles didn't let the children know he was going to propose to their mum - he didn't tell anyone at all about his plans to get down on one knee.

He said: "They were very excited when we told them [we were engaged], though."

Last month Natasha showed off her slinky frame, by posing in racy lingerie in an Instagram post.

The 34-year-old stripped down in an intimate underwear shoot and revealed how happy she is with her body after putting in serious 鈥渉ard work鈥?at the gym.