HollyWierd still smoking like a Chimney...

What ya got there, Katherine,  Salma Hayek, and Eva?

The "Ugly Betty" star is the latest closet celebrity smoker to be exposed after she was spotted puffing away on American Spirits this weekend in Beverly Hills alongside her 1-year-old daughter, Valentina.

Cameras caught the secret smoker outside Neiman Marcus as she lit up while her mom and tiny tot waited. Hayek told Marie Claire last year that she got hooked on cigarettes while filming "Frida" - and subsequently quit last April. "It's the sexiest vice you could possibly pick," she said. "I've tried to quit before. But this time I'm done with it. I've changed."

But the 42-year-old isn't the only star who tries to keep her nicotine addiction under wraps for fear of a negative fan reaction. "Desperate Housewives" star Eva Longoria Parker was desperate to keep her habit a secret after she was caught in the act while vacationing in Puerto Rico earlier this month.

"She hates to be photographed smoking," says X-17 owner Frank Navarre. "But we get her once in a while." But why, all the secrecy?  "It's so taboo," says Antonia Russo, a Manhattan image consultant who specializes in advising performing artists.

Not only does does the habit work against Hollywood's health conscious image, she says, but it's counterintuitive to being a role model for teens.

"There's definitely a concept of 'people who smoke just don't care about themselves' or they're socially irresponsible," she says. As a role model, "you wouldn't want to be a part of that."

Teen idol (and frequent smoker) "The Hills" star Lauren Conrad never appears on her hit reality show with a cigarette - and goes to great lengths to abstain from puffing in public. "She avoids it," says Navarre. Onetime closet smoker Britney Spears now openly flaunts her Marlboro Lights, while Anne Hathaway just admitted she was a smoker for years - before she quit this summer.

And new mom Ashlee Simpson-Wentz was a top-secret smoker who went to great lengths to hide her habit before she became pregnant, even ducking behind a pal when one of our reporters caught her in the act last year. The new crop of young actors and actresses are becoming more then social smokers, but in the face of losing endorsements and role model staus they are going to great lengths to hide they nasty habit.

The American Lung Association frowns upon star smokers, but still holds the tobacco industry responsible for influencing teens.

The organization "does not blame smokers, celebrity or otherwise," says spokesman Heather Grzelka. "The tobacco industry is guilty of causing nearly 400,000 deaths due to smoking related illnesses each year." "There is nothing glamorous about a product that causes death and disease," she adds.

But, according to Navarre, celebrities don't seem to care about smoking's nasty side effects. "A lot of celebrities smoke - a lot," he said. "Young Hollywood is still a big smoker. The anti-smoking campaign has had LITTLE or NO effect on them."