Fears for Olivia Newton John's 'surgery obsessed' daughter Chloe

Olivia Newton John's daughter Chloe Lattanzi has reportedly spent more than $450,000 in a bid to 'look like Barbie'.

Reports in Australia claim the 30-year-old has gone under the knife to transform her appearance after being pictured looked dramatically different.

According to New Idea magazine, Chloe has undergone a nose job, a number of breast enhancements, waist and thigh sculpting and Botox.

While Chloe has never publicly commented on the plastic surgery rumours, she’s not shy about sharing snaps of her slim frame online.

Chloe regularly shows off her plump lips in pouty selfies, and shares snaps of herself in skimpy clothes.

The New Idea source claimed Olivia is "desperately worried" for her daughter.

"Of course, Chloe is denying having anything done, but the speculation hasn’t stopped. The change is just too dramatic.”

Chloe is engaged to martial arts instructor James Driskill and has become well-known in her own right for TV appearances in The Wilde Girls and Bette.

In 2011 Chloe fought a well-publicised battle with anorexia and she has credited fiancee James with helping her to recover.

The daughter of the iconic 'Grease' star also has a history of cocaine and alcohol abuse, and recently shared a snap of her pretending to drink from a bottle at a liquor store to celebrate being sober for two years.

She captioned it: “#thedrunkolddays #sober2yearsnow.”

Photos: Getty Images and instagram.com/chloelattanzi