Lady Gaga left lingerie makers Rigby and Peller with their knickers in a twist after she was loaned prototypes for their latest collection and they were lost in transit.
The upmarket firm claims it sent seven sets of the handmade Autumn/Winter 2010 collection to New York for the Paparazzi singer to wear in a new music video, but only three were returned in time for the catwalk show this week.
The three sets of underwear which made it safely across the Atlantic were brought back in luggage, but the rest of the collection was reported 'Awol' by couriers, according to Rigby and Peller.
A spokeswoman for the lingerie company said: "Obviously we were delighted that Lady Gaga wanted to use our new pieces in her next video but we did stress we needed them back in plenty of time for our press show.
"They are all hand-made and unique designs that are simply priceless and are not available anywhere in the world so we are really disappointed not to get them back in time for our major showcase of the year.
"The last we heard the underwear was still 'Awol' and we are not sure when we will see them again.
"If we don't get them back then it could hold up the whole production of our AW10 collection as they are the prototypes."
The collection included skin-coloured basques with black contouring and matching high-waisted knickers, as well as sheer black lace bras and pants.
As well as celebrity clients including Sophie Dahl, Leona Lewis, Stella McCartney, Isabella Rossellini and Gwyneth Paltrow, Rigby and Peller holds the warrant to provide underwear to the queen of England.
A spokesman for Lady Gaga said: "We have nothing to say on the matter."