Nicole Richie sparks weight concerns as she shows off gaunt frame in latest appearance

Nicole Richie attends the Nicole Richie For House Of Harlow 1960 at Bloomingdales At The Beverly Center

Nicole Richie attends the Nicole Richie For House Of Harlow 1960 at Bloomingdales At The Beverly Center

Nicole Richie attends the Nicole Richie For House Of Harlow 1960 at Bloomingdales At The Beverly Center

Fashion designer/TV personality Nicole Richie leaves the "View" taping at the ABC Lincoln Center Studios on October 15, 2014 in New York City. (Photo by Ray Tamarra/GC Images)

Paris Hilton and Nicole Richie

Nicole Richie and Zoe Saldana at the 2014 AOL NewFronts at Duggal Greenhouse on April 29, 2014 in New York, New York. (Photo by Bryan Bedder/Getty Images for AOL)

Nicole Richie recently dyed her hair purple and we have to admit we love it on her

Nicole Richie attends the 2014 AOL NewFronts at Duggal Greenhouse on April 29, 2014 in New York, New York. (Photo by Brad Barket/Getty Images for AOL)

thumbnail: Nicole Richie attends the Nicole Richie For House Of Harlow 1960 at Bloomingdales At The Beverly Center
thumbnail: Nicole Richie attends the Nicole Richie For House Of Harlow 1960 at Bloomingdales At The Beverly Center
thumbnail: Nicole Richie attends the Nicole Richie For House Of Harlow 1960 at Bloomingdales At The Beverly Center
thumbnail: Fashion designer/TV personality Nicole Richie leaves the "View" taping at the ABC Lincoln Center Studios on October 15, 2014 in New York City.  (Photo by Ray Tamarra/GC Images)
thumbnail: Paris Hilton and Nicole Richie
thumbnail: Nicole Richie and Zoe Saldana at the 2014 AOL NewFronts at Duggal Greenhouse on April 29, 2014 in New York, New York.  (Photo by Bryan Bedder/Getty Images for AOL)
thumbnail: Nicole Richie recently dyed her hair purple and we have to admit we love it on her
thumbnail: Nicole Richie attends the 2014 AOL NewFronts at Duggal Greenhouse on April 29, 2014 in New York, New York.  (Photo by Brad Barket/Getty Images for AOL)
Independent.ie Newsdesk and Agencies

Nicole Richie is at the centre of fresh weight concerns after her recent appearance promoting her House of Harlow jewellery line in Los Angeles yesterday.

The reality tv star (33) and mum-of-two's frame looked gaunt during the promotional appearance and her chest appeared concave as she sat signing autographs for fans.

Nicole Richie attends the Nicole Richie For House Of Harlow 1960 at Bloomingdales At The Beverly Center

She appears to have lost several pounds on her already tiny frame, accentuated by her figure hugging Emilio Pucci dress.

LOS ANGELES, CA - OCTOBER 18: Nicole Richie attends the Nicole Richie For House Of Harlow 1960 at Bloomingdales At The Beverly Center on October 18, 2014 in Los Angeles, California. (Photo by Jonathan Leibson/Getty Images for GlamHouse Group)

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After months of sporting purple hair, the former Simple Life star also returned to her natural brunette roots for the PA.

Fashion designer/TV personality Nicole Richie leaves the "View" taping at the ABC Lincoln Center Studios on October 15, 2014 in New York City. (Photo by Ray Tamarra/GC Images)

While friends in her inner circle have expressed concern for her weight loss, according to Radar Online, she is focusing on building her empire, worth an estimated €30m.

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Nicole Richie recently dyed her hair purple and we have to admit we love it on her

“Nicole is pretty let down by how much she and Joel made in the last two years,” a source told the celebrity website.

“And there’s been a tacit understanding among her team lately that Joel simply isn’t going to be making much more money in the future. His prime earning years are behind him which is why Nicole wants to up the ante.”

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“Nicole believes there is much, much more money to be made off of her name and her taste."

She has previously fought off rumours she suffers from an eating disorder after a picture of her looking skeletal in a bikini was published in 2006.