Question: Who is the sibling of the main star of Cadet Kelly?

full_context: Document 1: In Search of Santa: In Search of Santa is a 2004 CGI family film starring Hilary Duff and her older sister Haylie Duff in their first voice roles. It was directed by William R. Kowalchuk and released on November 23, 2004.
Document 2: The Search for Santa Paws: Meanwhile, a young orphan named Quinn (Kaitlyn Maher) arrives at a foster home run by a strict and no - nonsense woman named Ms. Stout (Wendi McLendon - Covey) who does not approve of anything that children love: toys, Christmas decorations, singing, and even pets. She has a furnace which she uses to burn all the toys which she confiscates from the girls who rightfully own them. Despite the strict rules she has to respect while staying at the foster home, Quinn eventually befriends the girls, including Janie (G. Hannelius) and Willamina ``Will ''(Madison Pettis) Who has lost her love of the holiday after the death of her parents years ago.
Document 3: The Princess Diaries 2: Royal Engagement: Most of the cast returned from the first film, including Julie Andrews, Anne Hathaway, Héctor Elizondo, Heather Matarazzo, and Larry Miller. Garry Marshall returned to direct and Debra Martin Chase to produce. New characters include Viscount Mabrey (John Rhys - Davies), Lord Nicholas Devereaux (Chris Pine), and Andrew Jacoby (Callum Blue).
Document 4: Miracle on 34th Street: Attorney Fred Gailey (John Payne), Doris's neighbor, takes the young divorcée's daughter Susan (Natalie Wood) to see Santa. Doris has raised her to not believe in fairy tales, but Susan is shaken after seeing Kris speak Dutch with a girl who does not know English. Doris asks Kringle to tell Susan that he is not Santa, but he insists that he is.
Document 5: Miracle on 34th Street (1994 film): All the children begin to believe that he is the real Santa, with the exception of Dorey's six - year - old daughter, Susan (Mara Wilson). Dorey's boyfriend and neighbor, Bryan Bedford (Dylan McDermott), does his best to convince Susan to believe. While being babysat one night by Kris, she shares her Christmas wish with him. She would like a dad, a house (used every year for the Cole's catalog photoshoot) and a baby brother. He asks if she would begin to believe in Santa if she got all those things. She agrees that she would.
Document 6: The Santa Clause 2: Tim Allen as Scott Calvin / Santa Claus and Toy Santa Eric Lloyd as Charlie Calvin Elizabeth Mitchell as Principal Carol Newman Wendy Crewson as Laura Miller Judge Reinhold as Dr. Neal Miller Liliana Mumy as Lucy Miller David Krumholtz as Bernard the Elf Spencer Breslin as Curtis the Elf Danielle Woodman as Abby the Elf Aisha Tyler as Mother Nature Peter Boyle as Father Time Jay Thomas as Easter Bunny Kevin Pollak as Cupid Art LaFleur as Tooth Fairy Michael Dorn as Sandman
Document 7: Metamorphosis (Hilary Duff album): Metamorphosis is the second studio album by American singer Hilary Duff. The album was released on August 26, 2003 by Hollywood Records as a follow up to her holiday album, "Santa Claus Lane" (2002). According to Duff, the album incorporates elements of pop and rock music, and it represents changes that are specific to her life and that everyone experiences. Duff worked with several producers on the album such as The Matrix who worked with Latin Pop Singer, Myra, also signed to Hollywood Records prior. Others who collaborated on the album include Chico Bennett, Matthew Gerrard, John Shanks, and his frequent writing partner Kara DioGuardi.
Document 8: The Lizzie McGuire Movie: The Lizzie McGuire Movie is a 2003 American teen comedy film released by Walt Disney Pictures on May 2, 2003. The film serves as the finale of the Disney Channel television series of the same name, and was the first theatrical film based on a Disney Channel series. The film stars Hilary Duff, Adam Lamberg, Robert Carradine, Hallie Todd and Jake Thomas, and tells the story of Lizzie's graduation trip to Rome. At its release, the film peaked at number two at the domestic box office behind X2: X-Men United. The Lizzie McGuire Movie was released on August 12, 2003 on VHS and DVD. The Lizzie McGuire Movie was directed by Jim Fall.
Document 9: Cadet Kelly: Cadet Kelly is a 2002 Disney Channel Original Movie starring Hilary Duff and Christy Carlson Romano. The film premiered with 7.8 million viewers. It is Duff's second starring film role, her first being "Casper Meets Wendy". This was Disney Channel's second film filmed in Canada.
Document 10: Santa Claus: The Movie: Carrie Kei Heim as Cornelia, B.Z.'s 9 - year - old step - niece and orphan, who becomes Joe's conscience and best friend.
Document 11: A Christmas Melody: In September 2015, the Greater Cincinnati & Northern Kentucky Film Commission stated that Carey would be filming in Cincinnati for an upcoming film, Mistletoe & Melody. Carey was confirmed to be serving as the film's director and as one of the film's stars, and Stella Bulochnikov, Jonathan Axelrod, Alan Ett, Eric Jarboe and Kevin Connor were named as the movie's executive producers. Lacey Chabert and Brennan Elliott were also later confirmed as actors for the film, which had been re-titled A Christmas Melody. Child actress Fina Strazza was brought on to play Chabert's daughter and to sing ``Oh Santa! '', which Carey re-wrote for the film. Filming began on October 6, 2015 in Hyde Park and was expected to wrap on October 16, but did not finish until October 26.
Document 12: Miracle on 34th Street (1994 film): Richard Attenborough as Kris Kringle, said to be the real Santa Claus. He reluctantly takes on the duty as Cole's Santa Claus after the original drunk Santa is terminated. Elizabeth Perkins as Dorey Walker, Susan's mother. She is the director of special events for Cole's, and Bryan Bedford's girlfriend. Mara Wilson as Susan Walker, Dorey's 6 - year - old daughter. Dylan McDermott as Bryan Bedford, Dorey's boyfriend and neighbor. J.T. Walsh as Ed Collins, a lawyer Simon Jones as Donald Shellhammer, the general manager of Coles, known for his departing phrase ``Chin - Chin ''. James Remar as Jack Duff, a minion under the greedy Victor Landberg. Jane Leeves as Alberta Leonard, another minion under the greedy Victor Landberg. William Windom as C.F. Cole Robert Prosky as Judge Henry Harper, the city judge presiding over Kris' case. He has a grandson who is seen thinking Kris is Santa Claus in the first scene of the film. Allison Janney as a brazen woman shopper in Cole's Christmas Shopping Center. Jack McGee as Tony Falacchi, the drunk Santa who was fired from being the Cole's Santa Claus. Joss Ackland (uncredited) as Victor Landberg, owner of a competing store who is eager to see Cole's go out of business so he can buy out the facility and extend his market.
Document 13: The Ultimate Christmas Present: The Ultimate Christmas Present is a 2000 Disney Channel Original Movie starring Brenda Song and Hallee Hirsh. It premiered December 1, 2000 on Disney Channel as part of their Christmas season.
Document 14: Get a Clue: Get a Clue is a 2002 Disney Channel Original Movie starring Lindsay Lohan as Lexy Gold, a teenage high school student who investigates a mystery after one of her teachers goes missing. The movie stars Bug Hall as a boy who helps her, Ian Gomez as the missing teacher, Brenda Song as Lexy's best friend, Ali Mukaddam as another student, and Dan Lett as Lexy's father. The film premiered on the Disney Channel on June 28, 2002. It was directed by Maggie Greenwald and was written by Alana Sanko.
Document 15: High School Musical 2: High School Musical 2 is the second film in the High School Musical series. The World Premiere took place on August 14, 2007, at Disneyland, in Anaheim, California. The primary cast, including Zac Efron, Vanessa Hudgens, Ashley Tisdale, Lucas Grabeel, and Corbin Bleu attended the event. The film debuted on television on August 17, 2007, on Disney Channel in the U.S., and on Family in Canada.
ground_truth: Haylie Duff
sub_queries: Who are the cast members of Cadet Kelly? Answer: Hilary Duff
Hilary Duff >> sibling Answer: Haylie Duff