Danielle Fishel

She dated *NSYNC band member Lance Bass. She named her son after Michael Landon, her mentor on Little House. Fishel's characterization of Topanga gave her popularity in many places, and her photos have become popular items in fan sites written in many languages, including English, Portuguese, Italian and Spanish. She is the older half-sister of Roseanne star Sara Gilbert. Danielle Christine Fishel (born May 5, 1981 in Mesa, Arizona) is an American actress who became famous for her portrayal of Topanga in the comedy series Boy Meets World. Gilbert is married to Bruce Boxleitner. As a former child actor, she is best known for her role of Laura Ingalls on the television series Little House on the Prairie and for her term as president of the Screen Actors Guild which she won after a bitter election with Valerie Harper.

Melissa Ellen Gilbert (born May 8, 1964) is an American actress.