Dee Reynolds is a fictional character from the television show It's Always Sunny in Philadelphia. She is portrayed by actress Kaitlin Olson and is known for her aspirations of becoming an actress and her often misguided attempts to achieve fame. Dee is the only female member of the group, which includes her brother Dennis Reynolds and their friends Charlie Kelly, Mac, and Frank Reynolds. Throughout the series, Dee's character is often depicted as self-absorbed and struggling with her identity. Despite her flaws, she provides comedic relief and contributes to the show's dynamic with her unique personality and interactions with the other characters.