Socialite Paris Hilton has bought the world's smallest Pomeranian and paid $13,000 for the pet.

The animal-loving socialite bought the pet from specialist dog sellers Betty's Teacup Yorkies, who named the pup as 'Mr. Amazing', reports showbizspy.com.

A post describing "Mr. Amazing" on the company's website, which now has a "sold to Paris Hilton" message with it, reads: "One in a million micro, tiny little boy Mr. Amazing. He is 4.5 months old, only 10 ounces, he is amazing! Triple white ice coat with the flattest bear face ever! Super short compact cob by body with the shortest little legs ever. He has big round eyes. O nes like him are very hard to find...''

The dog, who is only 2.5 inches tall, will soon be flown from his breeders in Calgary, Canada, to Paris' home in the US and will be accompanied by his own personal nanny for the trip.

Hilton is excited about meeting her new canine friend, and tweeted: "I love him! Cutest thing on Earth! Love my new baby!"