Italian fashion designer Giorgio Armani has reportedly accused rival company Dolce & Gabbana of copying one of his padded trouser designs.

The row, billed "Trousergate" by some media, relates to the design of D&G quilted pants spotted at a fashion show in Milan last week that Armani claims are copied, according to Italy's La Repubblica newspaper.

Armani has reportedly showed Italian journalists photos of the two designs and pointed out the similarities.

Neither company was able to immediately comment on the reports.