Fast fashion online retailer Boohoo is investigating why the same items of clothing were sold for higher prices across a number of its fashion labels after the BBC discovered that Dorothy Perkins and Coast, which are both owned by Boohoo, sold exactly the same coat but it cost £34 more at Coast.
There are price disparities across a range of Boohoo brands, which also include Oasis and Warehouse.
In a statement to the BBC, Boohoo said the "miscommunication was not intentional".
"All Boohoo group brands work independently, and so this miscommunication was not intentional as teams are not privy to what's being bought and sold across the other group brands," a spokeswoman for Boohoo said.
"Our internal investigation continues and we will be re-pricing all the crossover stock to be aligned."
Boohoo said the coat was first sold by Coast and has now been re-priced at £17 on both brands' websites.