I think your wife also looks a little like the woman who played Rob’s girlfriend in High Fidelity.
My brother in law gets asked for his autograph all the time by people who think he looks like David Caruso or Timothy Busfield. Apparently, if you have red hair, you all look alike.
Better them than mistaking him for Carrot Top. 
My friend’s dad has signed autographs as both Joe Montana and Huey Lewis.
My ex-girlfriend had a slight resemblance to Christina Ricci… round face, dark features, sunken eyes.
Another friend looks like a Filipino sister of Resse witherspoon.
I, on the left, look like James Spader. Well, I do without glasses or facial hair.
I know I have other friends who resemble celebs, but they’re escaping me at the moment.
Oh! I’m friends with a singer who looks like a cross between Alyssa Milano and Eliza Dushku. (And I think the fact that such people exist is proof there is a God.)