DWTS: How Selma Blair Hopes to INSPIRE Her Son (Exclusive)

Selma Blair is taking on a new challenge by joining ‘Dancing with the Stars’ amid her multiple sclerosis battle. She and partner Sasha Farber spoke to ‘Extra’s’ Rachel Lindsay after the cast reveal, and Selma shared how she hopes to inspire her son Arthur. ‘Dancing with the Stars’ Season 31 premieres September 19 on Disney .