Top 10 Celebrities with Twin Brother and Sister

5 Kelly Donovan and Nicholas Brendon

These are identical twins who chose to be called different names to make it easier to tell the difference, despite how similar their looks are. Nicholas might be familiar to you as Xander Harris from ‘Buffy the Vampire Slayer.

Nicholas was the troubled one of the two, as he struggled with alcoholism and ended up in jail. Kelly, his brother, continued to work as a stunt man on television.