2. Julianne Hough
These days she is known as an actress, country music singer and ballroom dancer, but before she became an up-and-coming musical film star and the youngest ever professional winner of Dancing With The Stars (Americas answer to Strictly Come Dancing), Julianne Hough was sent to London by her Mormon parents to hone her craft. During her time in the British capital, she appeared in Harry Potter and the Philosophers Stone in an uncredited and non-speaking role as a schoolgirl, who can be seen in the stands of the films Quidditch game standing to the left of Ron, Dean Thomas and Hagrid as they cheer on Harry and the rest of the Gryffindor team. Her brother Derek, also known for his appearances on Dancing With The Stars (and alleged relationship with Cheryl Cole) also appears in a similar non-speaking role.