Celebrity Dachshund Watch: Mary-Kate Olsen

Mary-Kate Olsen is spotted walking her dog out in New York City over the 4th of July weekend.

Looks like everyone's favorite Olsen twin is a Dachshund Lover.  What's next - will Paris Hilton be dumping her Chihuahuas for Wiener Dogs?  Stay tuned to find out.

See more photos of Mary-Kate with her finest accessory yet at celebuzz.