'H&A' star causes concern with weight

Isabel Lucas has caused concern among friends after a dramatic weight loss.

The former Home and Away star, who is currently dating musician Angus Stone, has reportedly dropped to 43kg due to a "busy" lifestyle and staying up all night with Stone.

One friend told NW magazine: "Isabel's been working so hard. When she's busy and stressed she forgets to eat. Isabel likes to be able to go out and meet her friends or get a coffee without being noticed. But more and more she's being hassled for pictures and autographs.

"She hates the fame side of the business. She loves to act, but loathes giving interviews on the red carpet and being photographed. Isabel's working too hard, partying too hard and not eating enough. Everyone's worried she could be close to collapse."

The friend added: "[Isabel and Angus] party a lot. Angus loves to stay up all night and sleep all day, but Isabel has to work most days, so she misses out on sleep. She's never had a huge appetite but these days barely eats anything - she survives on coffee and sugar-free Red Bull.

"She looks pale and tired most of the time. Her friends are really worried."