Lizzie McGuire (2001)

S2E20 Xtreme Xmas

Lizzie is determined to take home the top award in the Christmas parade with her creative concept for a "Rock & Roll Christmas" float. The entire McGuire family rallies around her, and they encounter a quirky elderly man dressed as an elf, who introduces himself as Nobby Frostybump. His unwavering belief that he is one of Santa's elves adds a whimsical touch to the festivities, enchanting everyone around him!