Miranda Kerr's Qantas uniforms have been criticised by the airline's staff.

The leggy supermodel - who became an ambassador for the Australian company in January - unveiled the slim line dresses designed by Martin Grant at a launch event in April, but the airline's air hostesses have revealed they aren't happy because the sexy new uniforms don't suit the average woman.

One Qantas flight attendant told News.com.au: ''The uniform looks fantastic on Miranda Kerr, but unfortunately we don't all look like her. Hosties range in age from their twenties to their sixties and a lot of the older ones don't want to wear tight-fitting uniforms. We like the current Peter Morrissey-designed uniforms. They are really comfortable.''

Another added: ''The uniforms are really tight and they are simply not practical for the very physical job we have to do.''

Airline bosses have reportedly been contacted about the issues with the uniforms, which are supposed to be worn by staff from January.

A source said: ''We have asked the airline to tweak the uniform a little to accommodate some concerns. Once it comes in and the crew are wearing it, we will be having more discussions.

''If there are more issues, obviously we would expect the company to iron them out.''