When Kelly Clarkson announced she and her fiance were eloping, that left the role of their planned officiant, Blake Shelton, up in the air. The country star would've become the latest celeb to perform a wedding, but here are more (ordained through various means) who've done it already.

  • Russell Brand

    Just because his own union to Katy Perry didn't work out doesn't mean the comedian doesn't believe in the institution of marriage. He sealed the deal -- complete with NSFW vows -- for a couple at one of his shows in 2011.

  • Jeff Probst

    The 'Survivor' host has been officiating weddings since the 1990s, but the 2010 nuptials he performed for 'The Office' star Jenna Fischer (a longtime pal) are probably the most famous.

    Jemal Countess, Getty Images
  • Lady Gaga

    Mother Monster became ordained in 2011 so she could oversee her yoga instructor's same-sex wedding in New York.

    Robin Marchant, Getty Images
  • Jason Segel

    Two of Segel's fans were so determined to have him perform their ceremony, they plastered his neighborhood in fliers to find him. Their persistence paid off -- the actor did the honors on a 2010 episode of the 'Tonight Show,' with Jay Leno serving as a witness.

    Jason Merritt, Getty Images
  • Conan O'Brien

    In 2011, Conan officiated a same-sex wedding between costume designer Scott Cronick and his partner David Gorshein at NYC's Beacon Theatre.

  • Emma Stone

    It's only fitting that the actress oversaw the November 2012 union between her publicist Holly Shakoor and her 'Gangster Squad' director Ruben Fleischer -- after all, she introduced them.

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  • Victor Garber

    Some celebrities have performed gay marriages, but Garber -- a gay actor -- was the officiant and only guest at his 'Alias' co-star Jennifer Garner's tropical wedding to Ben Affleck in 2005. (Garber is also godfather to the couple's daughter Violet.)

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  • Ian McKellen

    McKellan's presided over weddings before, but the one he did in September for pal Patrick Stewart was particularly special -- not only to him, but to the rest of us as well.

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  • Kathy Griffin

    The redheaded comedienne has been performing weddings for years -- including an opposite-sex ceremony in 2008 and a same-sex vow renewal on her (sadly short-lived) late-night talk show 'Kathy' last year.

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  • Fran Drescher

    After winning TV Land's 'Love Is Love' contest last year, Tom Whalen and Russell Kemp were wed by 'The Nanny' herself in New York (she even blogged about the experience).