Denise Richards is ''obsessed'' with vintage ashtrays.
The 41-year-old actress - who married to troubled star Charlie Sheen from 2002 to 2006 - loves cigarette paraphernalia, despite the fact she doesn't smoke herself.
The Hollywood beauty - who has daughters Sam, eight, and Lola, seven, from her marriage to Charlie Sheen, and a third girl Eloise, who she adopted in June 2011 - wrote on twitter: ''I dont know why but I'm obsessed with buying vintage ashtrays ... I don't even smoke... (sic)''
Denise is not the only Hollywood beauty to enjoy collecting unusual things; burlesque dancer Dita Von Teese is a fan of vintage taxidermy.
Her collection of dead animals includes a full-sized stuffed ostrich, and she also has a penchant for unusual hats.
Dita said: ''I collect vintage taxidermy: I have two big heart-shaped domes filled with birds, I have a bear rug, a monkey and a full ostrich. I also have a collection of rare feathers I got from a famous place in France that supplied feathers to Josephine Baker and Mistinguett and all the showgirls in Paris for 300 years.
''My hat collection is massive. I have several hundred, and a whole room in my house devoted to them.''