The most notable addition was a then-unknown Debby Ryan, cast as Jessie, a love interest for Jackson Stewart. While Jackson (Jason Earles) had often been the butt of the joke in previous seasons, Season 4 gave him a genuine romantic arc, allowing the character to mature from a goofy older brother to a young man capable of a serious relationship.
If you’re revisiting Hannah Montana as an adult, and watch through the finale. That’s the real heart of Season 4. hannah montana series 4