The record-breaking item, posted by event agency Chillisauce.co.uk, was won by online casino company Golden Palace.
The winning bid more than triples the £1,000 figure the agency were hoping to raise.
The world's largest bra was sold to build awareness and involvement in 'Wear It Pink Day' and raise money for Breast Cancer Campaign.
Chillisauce.co.uk's director Adrian Simpson stated: "We're just really happy that so much money has been raised for Breast Cancer Campaign.
"The fact that it's going to a very interesting new home is a fantastic bonus for all of us who have been involved in the project for the last year."
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