Sedona in Fortnite is an Epic Outfit that was introduced as part of the Season 11 Music Pass during Chapter 6: Season 4. Sedona is themed as part of a "pop punk duo" along with another character named Jana Pastel. The outfit unlocks immediately when purchasing the music pass, which also features licensed music tracks and various instrument-themed rewards. Sedona's design has a somewhat generic and unremarkable style compared to other Fortnite skins, but it is notably included in the music-oriented season content. The Season 11 Music Pass includes six licensed jam tracks, multiple instrument emotes, and back bling such as the "Bright Bag" for Sedona. This Music Pass changed the usual skin theme by not including famous celebrity skins and instead focused on Fortnite-original characters and music content.
In short, Sedona is a Fortnite original skin released as part of the music pass in Fortnite's Chapter 6 Season 4, characterized by a pop punk aesthetic and connected to the seasonal music festival theme.