KRISTEN BELL must fend off numerous suitors in 'When in Rome' -- including hunky JOSH DUHAMEL -- and ET is on the set of the fun romantic comedy!

"For some reason I keep doing movies with all boys; I need to do a movie with some girls, because I'm up to here with the testosterone, you know?" Kristen jokes with ET. "There's too many funny guys in this movie -- I'm really trying to compete."

The 'Forgetting Sarah Marshall' star plays Beth, a successful-but-single curator at the Guggenheim museum in New York City who flies out to Rome for her sister's impulsive wedding. When in Rome, Beth picks up coins from the "fountain of love" -- and soon finds a quintet of suitors waiting for her back home! Is it a blessing, or a curse?

Josh leads the pack of possibilities in Kristen's male harem, but she also has to contend with the likes of self-absorbed suitor DAX SHEPARD, WILL ARNETT, an Italian Romeo stalking her halfway around the globe, and JON HEDER, a street magician who mines his talents to try to land Beth.

"There's literally four or five of us competing for the prize," explains Josh, "and for me it's more fun that way; it's less predictable."

Kristen comments that of her co-stars, "It's difficult to act with [Will] because I just laugh through all my lines," while she sarcastically describes the handsome Josh as "really an unfortunate-looking human being."

ANGELICA HUSTON and DANNY DeVITO round out the cast of the MARK STEVEN JOHNSON-directed comedy ('Ghost Rider,' 'Simon Birch'), which is filming on location in New York and Rome.