Tori Spelling and the case of the mysterious sunken chest

The mother-of-two’s thin upper-body has left observers worried for her health in recent weeks and these latest pictures will no doubt spark further concerns.

The star - who recently pulled out of an appearance in the new 90210 spin-off - admitted to having undergone breast augmentation surgery earlier this year.

Collapsing: Tori Spelling's chest appeared to be sinking in the centre as she went for a stroll in Beverly Hills with husband Dean

The actress - who was wearing a necklace with the names of her two children Liam and Stella - has admitted having had breast augmentation surgery

'(I had) a boob job. There it is. I finally said it. I wanted to come clean that I had my boobs done in my 20s, because people falsely write that I've had all those things done.

'I've had the two procedures that probably every other woman in Hollywood has had done.' she said earlier this year,' The Sun quoted her as saying.

Tori has been plagued by controversy and heartbreak in the last few years.

She and husband Dean left their spouses for each other after meeting and falling in love on the set of TV movie Mind Over Murder.

Dean's devastated wife Mary Jo Eustace - mother of his 9-year-old son - then wrote a book entitled Tori Spelling stole my husband.

Spelling reveals her thin upper chest while out with her son Liam last week

Her father, the creator of dozens of television shows including Dynasty, Charlie's Angels, The Love Boat and Fantasy Island, died in June 2006, aged 83.

A feud then began with her mother, Candy, who reportedly blocked her from producing a documentary about her father by refusing to let her use archive material of his shows.

Tori is also only believed to have inherited £430,000 of her late father's estimated £270million fortune.

Tori wed Dean in Fiji in May 2006 and the couple have two-children, Liam 1, and two-month old Stella.