Cattle Annie and Little Britches (1980)

 

In 19th-century Oklahoma, two teen girls who love stories about outlaws, are on a quest to meet and join up with them. They find a shadow of a former gang and although disappointed, still try to help them escape from a vigorous Marshal.

From memory: Obviously intended as a female variation of Butch Cassidy and Sundance Kid, this Western does have similar charm, humor and vivacity plus a good star cast, but remains not quite as memorable. 

Halliwell (no star): "Rather winsome family Western, with too little real action and too much romping about."

Maltin***: "Very pleasant little Western...Winning cast, including Plummer in film debut."