Asthon Kutcher had a 30th Birthday bash and invited many stars like Madonna, Kate Hudson, Ivanka Trump, Gwyneth Paltrow, Salma Hayek, and Roberto Cavalli. What showed up that wasn't invited was Hepatitis A.

No, that's not Paris' nickname, it was actually Hepititus A the virus that made an uninvited appearance at the NYC Socialist restaurant via a kitchen worker.

The NY health department is urging guests from the party to get tested and receive the proper shots.

Oh Madonna, c'mon, you know Ashton Kutcher is so worth the risk of Hepatitus A.

[images: dotspotter source: star]