Kate Lynn is one of the "Kaitlins" and a student at Waverly Hills Elementary School.
Kate Lynn is of African-American heritage, has frizzy brown hair, and wears a dark-pink shirt with a pink skirt. She also possesses a pink purse that she keeps slung over her left arm. She also has pink earrings.
She and the other Kaitlins greet Lisa during lunch and try to ask her what her favorite song by Alaska Nebraska is. When they find out that Lisa doesn't know who Alaska is, they proclaim her as "lame" and abandon her. Later, she and the other Kaitlins find out about Bart's arrest by Chief Wiggum (which turned out to be a stunt in order for Bart to achieve popularity at the school) via gossip and believe him when he lies to them that Lisa is a friend of Alaska's. They immediately gossip the news all around the school, making Lisa popular. However, when Lisa tells her and the other Kaitlins that she isn't Alaska's friend, they become angry and pursue her around Waverly Hills, but apparently lose her. She hasn't been seen since.
- Like Sherri and Terri, the Kaitlins can also be identified by their placement in their lineup; Kate Lynn is always found at the right of the group.
- Her favorite Alaska Nebraska song is "Make It Yours (The Star Song)".