Ashton's Heppy Birthday?

There’s been a health scare at Ashton Kutcher's 30th birthday party.

The New York City Department of Health has issued an alert stating that a case of hepatitis A was discovered at West Village hot spot Socialista – the venue where her and a host of A-list stars spent the night on February 7.

Apparently a bartender working that night was infected with the disease - an inflammation of the liver most commonly spread by people who don’t wash their hands properly after going to the toilet.

In addition to Ashton, his wife Demi Moore and her ex Bruce Willis  the guest list that night also featured Madonna, Kate Hudson, Gwyneth Paltrow, Salma Hayek, Liv Tyler and Lucy Liu.