Gus Ruelas/Invision/AP 1 / 5
Gus Ruelas/Invision/AP 1 / 5

Actress/comedienne Janeane Garofalo was married for 20 years without knowing it after drunkenly tying the knot in Las Vegas with a boyfriend in the 1990s.

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The "West Wing" star exchanged vows with "The Big Bang Theory" producer Rob Cohen at a drive-through chapel two decades ago in Sin City, but they didn't realize the wedding was for real until the TV executive started making plans to marry his new fiancee.

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The pair's divorce finally came through on Saturday, shortly before they met up at the New York Comedy Festival as part of a reunion of workers on "The Ben Stiller Show," the actor's 1990s comedy sketch series.

Garofalo tells New York Post gossip column Page Six, "Rob and I got married, for real, which we had to have a notary dissolve [it] not 30 minutes before we got here tonight. We were married for 20 years until this evening ... We got married drunk in Vegas... We dated for a

year and we got married at a drive-through chapel in a cab. [We thought] you have to go down to the courthouse and sign papers and stuff, so who knew? We were married, and apparently now that [Rob] is getting married for real, his lawyer dug up something."

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Cohen is engaged to Jill Leiderman, a producer on "Jimmy Kimmel Live."