20-year-old Danielle Sheehan recently underwent surgery at a private clinic in Norwich after winning the chance to boost her size 34C breasts to a 34E.
The healthcare worker, who has always wanted bigger boobs, says she placed a bid on millibid.co.uk for an "ultimate *makeover" and was shocked to win for just £3.90.
She then used the prize to have the £4,100 boob job carried out by a leading cosmetic surgeon… all for less than the price of a push-up bra.
"They hurt for a little while afterwards, but they are fine now. My boyfriend thinks they look great too, and even my mum is happy for me.
"I always wanted it done, but never really had the money, so to win an auction was amazing."
A spokesperson for millibid.co.uk, where auctions have also included a MacBook at 44 pence, 46" HD TV at £2.29, and a new Audi TT at £11.73, said: "We are obviously delighted for Danielle."