DIXIE CHICKS stars Natalie Maines and Emily Robison have sparked a new controversy after both were spotted leaving a Los Angeles cosmetic surgery clinic within an hour of each other.

The new mums reportedly went under the knife at The S+B Surgery Center, where former DALLAS star Victoria Principal's husband HARRY GLASSMAN works.

Maines and Robison are keeping mum about their visits last week (10OCT05), despite the fact both country stars were photographed leaving the surgery in wheelchairs, visibly in pain.

According to a source who spoke to US tabloid National Enquirer, Maines underwent liposuction, while Robison had a tummy tuck.

The girls were caught up in a controversy in 2003 when Maines publicly criticised President George W Bush during a concert in England.