Lady Gaga, Amy Poehler, Emily VanCamp #GetCovered in Hollywood’s Viral Obamacare Campaign

Olivia Wilde and Pharrell are also among those in Hollywood urging Americans to buy health insurance

Celebrities are tweeting their support for Obamacare, joining a viral campaign urging uninsured Americans to take advantage of the new Obamacare exchanges.

Also read: ‘Breaking Bad’ Star Aaron Paul Stumps for Obamacare on ‘SNL’ (Video)

Holding up handwritten signs and using the hashtag “#GetCovered,” stars from the world of TV, music and movies are taking part. Some, like “Vampire Diaries” star Nina Dobrev and Verne Troyer, are doing so topless.

Here are a few: