Paris Hilton -- Expensive Dog Debuts in L.A.

Paris Hilton's expensive pomeranian has touched down in Los Angeles ... and it's already melting hearts.

Paris was leaving LAX when she told us the $13K price tag was worth every penny -- it's hard to disagree when you take one look at the adorable mini pom.

The celebrity DJ also says she already ditched the name Mr. Amazing ... the pooch has a more Hilton-appropriate name now.