Credit: © 2011 Disney ABC Television Group

You shouldn't trust the b--- in Apartment 23, and you shouldn't put too much stock in casual tweets from stars. But still, Krysten Ritter in Fifty Shades of Grey? That could be fun! She definitely has a naughty-sexy vibe about her. But does she do sweet and innocent?

The star of ABC's Don't Trust the B--- is now churning in the Fifty Shades of Grey rumor mill, thanks to a tweet from a fan named Toni Longo. Toni included Krysten in her response to a casting speculation story on the merits of Krysten or Anne Hathaway as Anastasia Steele. (Ana is the lead female character in the Fifty Shades series.) "@50shadesclub between the two it should 100% be @Krystenritter," Toni tweeted, to which Krysten replied, "Thanks! i would be down. ;)"

On paper, 31-year-old Krysten is a wee bit old for Ana, but Alexis Bledel — whose name has come up a lot for Ana — is also 31. Lucy Hale, whose name also comes up regularly in casting speculation stories, is only 23, but she and Alexis almost look to be the same age.

Anyway, what do you think about having Krysten in Fifty Shades of Grey? Yes, no, maybe, no way, heck yeah, other?

Sources: @JustMe_Toni, @KrystenRitter