The Real Housewives of Beverly Hills star has lost an estimated 20lb (1st 6lbs) in less than two months with sources attributing her shrinking frame to her marital woes.
Taylor, 40, was pictured earlier this month in Santa Barbara, with her rib cage protruding and concave stomach, sparking anorexia fears.
Back in February she was pictured on the red carpet looking slender and more healthy.
But over recent weeks, the Bravo reality star has been shedding the pounds at a worrying rate.
Weight loss expert Dr Aaron Tabor, who does not treat Taylor, told Star magazine that she is showing signs of muscle atrophy on her arms and chest.
'She's not getting enough protein in her body and is borderline anorexic,' he claimed, estimating that she has dropped from a healthy 130lbs to 110lbs.
A friend of the celeb told the magazine Taylor is barely eating and that problems in her marriage with investor husband Russell are taking a toll.
'She is bringing in most of the money for the household. He doesn't seem to be giving her the respect and love she deserves,' the source said.
'They are in therapy, but it doesn't look like it's helping,' the insider added.
Taylor, who has a four-year-old daughter Kennedy, is the youngest member of the Beverly Hills reality show.
Other housewives in the series include Camille Grammer and Paris Hilton's aunts, Kim and Kyle Richards.
They are currently filming the second season of the hit show.
