Fiona, Adventure Time

A woman dressed in a costume inspired by Fiona from Adventure Time, standing in front of a stone wall. She wears a blue dress with a green backpack and holds a yellow sword in her right hand. Her left leg is bent at the knee, and she appears to be posing for the camera. The background features a stone wall with an arched doorway, while trees are visible in the distance. The overall atmosphere suggests that the woman is attending a costume party or event, possibly a comic-con or fan convention.