May 3, 2009, 4:00 GMT
Nadine Coyle once spent £6,000 on a coat - by mistake.
Members of the British band Girls Aloud. Nadine (C) She said: "I bought a £6,000 coat. I thought it was £500. I haven't even worn it once. I had to call my bank and authorise it, so I should have known. Then I saw the receipt. EPA/DANIEL DEME
The Girls Aloud star "nearly had a heart attack" when she realised she had accidentally splashed out on such an expensive item.
She said: "I bought a £6,000 coat. I thought it was £500. I haven't even worn it once. I had to call my bank and authorise it, so I should have known. Then I saw the receipt.
"Honestly, I nearly had a heart attack on the spot, but I was too embarrassed to say anything. The sales assistant sucked me in."
The 23-year-old beauty said she felt physically ill when she realised she had made the costly mistake.
She explained: "It's so bad! It makes me feel really sick just thinking about it."
Nadine is not the only Girls Aloud star with a shopping problem.
Fellow bandmate Sarah has confessed she accidentally spent a small fortune on a dress for a big night out recently.
She said: "I have a habit of not looking at prices and I bought this gorgeous black knitted dress - I've worn it quite often but I didn't realise how much it was."
Your Talkback on this Story