Whoa! Has this girl had media training or what?! When we asked Kate Bosworth about reports that she and Gwyenth Paltrow's husband Chris Martin of Coldplay were seen kissing at a U2 concert in Las Vegas a couple weeks ago, she said -- avoiding the question -- "You guys are ridiculous."

Not really an answer to our question, is it?!

You'll remember, Star magazine reported last week that Kate and Chris were spotted kissing at the October 23rd concert. And X17online has its own exclusive sources who tell us the two also spend time together at the Bridge School's benefit concert in the Bay Area the night after.

Paltrow's publicist has issued a statement saying his client may seek legal remedies against the Star and Martin's rep has issued a denial.

Why didn't Bosworth issue her own denial to X17online?