Giddy up! ET takes you to the Hollywood premiere of Renee Zellweger and Viggo Mortensen's hot new Western flick, 'Appaloosa.' Watch as Viggo, Renee, and co-star Ed Harris walk the red carpet!

Renee talks to ET about the many, crazy engagement rumors about her! Also, watch co-star Ed Harris tell ET about working with Renee and his frist impression of the actress: "When I met her, I fell in love with her."

The Western drama follows two friends (Mortensen and Harris) who are brought into the small town of Appaloosa in order to help save it from a tyrannical rancher (Jeremy Irons). Tensions rise and things get even more complicated between the men when a beautiful young widow (Zellweger) gets in the middle of the already dangerous situation.

'Appaloosa' is based on the novel by Spenser for Hire author Robert B. Parker and hits theaters Friday, October 3.