Hollywood stars Kate Hudson and Orlando Bloom have sparked rumors of a new Hollywood romance after they were caught kissing at a Halloween party. The pair got together at a bash Hudson threw at her home in Pacific Palisades, California on October 27, and the actress didn't care who saw them - including her recent ex, actor Dax Shepherd.

An insider tells OK! magazine, "Kate and Orlando were talking, drinking and laughing. Then they just started going at it (kissing).

They made out for ages and looked like they were really enjoying themselves. They didn't care who was watching. After that first make-out session, they walked around and talked to everyone as a couple. They were inseparable for the rest of the night."

Another onlooker adds, "At one point, Kate and Orlando were kissing in front of Dax. But he didn't seem to care at all."

Hudson's divorce from The Black Crowes frontman Chris Robinson was finalized just two days before her kissing marathon with Bloom, on October 25.

Other guests at the party included another hot new Hollywood couple, Jake Gyllenhaal and Reese Witherspoon.

-Kate Hudson Pictures
-Orlando Bloom Pictures

(This news article provided by World Entertainment News Network)