Chloë Sevigny and Demi Moore
Jamie McCarthy/Wireimage; Jason Kempin/Getty
01/26/2012 at 03:00 PM EST
Things sure move fast in Hollywood.
Not a day went by between Demi Moore
dropping out of her cameo role as Gloria Steinem in the Linda Lovelace biopic and Chloë Sevigny joining the cast as "a feminist journalist assigned to write a story about Lovelace."
Moore, who was hospitalized Monday night
, is seeking "professional assistance to treat her exhaustion
and improve her overall health," according to her rep.
Whether Sevigny's journalist role in Lovelace
and the Steinem cameo are one and the same remains to be seen.
The film, meanwhile, started shooting in Los Angeles last month and stars Amanda Seyfried in the title role alongside Peter Sarsgaard, Debi Mazar, Adam Brody, Chris Noth, Sharon Stone and Juno Temple.
first reported Sevigny's casting news.