Girls Aloud star Nadine Coyle has admitted she was terrified to sing at Nicky Byrne's wedding when the Westlife star tied the knot in the South of France in 2003.

Speaking on RTÉ One's The Ray D'Arcy Show on Saturday night, the 30-year-old singer, who hails from Derry, revealed that she sang a Celine Dion song while the Westlife star exchanged vows with his wife Georgina Ahern.

She told D'Arcy: "I did sing at Nicky's wedding and it was probably the most terrifying thing I've ever done in my entire life. 

"I was in Girls Aloud about six months or so and I was like 'O My God this guy from Westlife wants me to sing at his wedding.' I think Louis Walsh put us in touch. 

"It was in a chapel in the south of France and it was a Celine Dion song and it was when they were doing their wedding vows and it was terrifying. I will never forget it."

When D'Arcy then asked Coyle is she was paid for the gig she responded jokingly that she "would not be a lady" if she spoke about such things.

Coyle parted way with Girls Aloud in 2013 after being formed on TV show Popstars: The Rivals in 2002. The hugely popular band went on to achieve twenty consecutive top ten singles in the United Kingdom, including four number ones. 

There have always been rumours that Nadine Coyle fell out with her bandmates, Cheryl Fernandez-Versini, Sarah Harding, Nicola Roberts and Kimberly Walsh, towards the end of their time together. While she didn't exaclty put those rumours to bed on The Ray D'Arcy Show she did say she was hoping to meet with Harding soon.

"We are always trying to get together. Sarah. I'm going to try and see her, it was her birthday recently and she's been on some holiday so hopefully I get to see her soon."

Coyle recently joined forced with former Westlife star Shane Filan and the pair have released the duet, I Could Be.

Joining D'Arcy and Coyle on the couch Filan admitted that he gets asked about a Westlife reunion all the time and he admitted it may happen sometime in the future.

He said: "Westlife was a lot of fun and we had an amazing time – you never say never. You can never tell what the future will bring. We all ended on great terms, we're all still in touch. Westlife was incredible."

Click here to watch the full interview with Nadine Coyle and Shane Filan, plus their performance of I Could Be on The Ray D'Arcy Show.