20 famous celebrity siblings you didn't know about 

20 famous celebrity siblings you didn
20 famous celebrity siblings you didn't know about | Image Source: All Original Sources

3. Siblings - Lily and Alfie Allen

Lily and Alfie Allen | Image Source: HBO & YouTube official music video
Lily and Alfie Allen | Image Source: HBO & YouTube official music video

In 2006, British pop singer Lily Allen put out a song named “Alfie,” cheerfully urging her lazy younger brother to improve his life and find a job. So, even if they don't know it, Game of Thrones fans might owe this song to one of the show’s most remarkable characters. Lily's younger brother, Alfie Allen, became part of the popular HBO show as Theon Greyjoy in 2011. Lily's sibling even received an Emmy nomination for his acting in 2019.

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Edited by Zainab Shaikh