Originally from a quiet town in Kansas, Callan moved to Boston after college to pursue a Masters in Fine Arts in Costume Production at Boston University. Upon graduation she moved to New York City, getting her start in the costume shops and eventually moving on to open a few Broadway shows. Then in 2020 she transitioned over to film and television.

Callan is a proud member of the Theatrical Wardrobe Union, Local 764 of the I.A.T.S.E