From Wikipedia:
Alice in Wonderland (1985) is a two-part film adaptation of Lewis Carroll's Alice books. An Irwin Allen production, it was a special made for television and used a huge all-star cast of notable actors and actresses. The title role was played by 9-year-old Natalie Gregory, who wore a blonde wig for this miniseries. Alice in Wonderland was first telecast December 9, 1985, (part one) and December 10, 1985 (part two), at 8:00pm EST on CBS. It was filmed in Los Angeles at the MGM Studios (now known as Sony Pictures Studios) in Culver City over a 55-day period from March 12, 1985 to May 28 of that same year. Additional filming took place at Malibu beach for oyster scene, and establishing shots of Alice's house took place at the S. S. Hinds Estate, also in the Los Angeles area.