Actress January Jones accused "Fifty Shades of Grey" of copying a "Mad Men" billboard from 2010. She Instagrammed a photo of the "Fifty Shade" poster featuring Jamie Dornan's Christian Grey staring out the window at the Seattle skyline with the caption "Does this look familiar to anyone else? #madmenpostercirca2010."

The "Fifty Shades" poster does resemble one "Mad Men" did a few years ago of actor Jon Hamm (who plays Don Draper) wearing a dark suit starring out a giant glass window.

E.L. James and "Team 50" haven't responded to Jones' comment but fans of "Mad Men" were quick to point out the similarities.

"So lame but not surprising," one Instagram user commented.

"Jon Hamm would've made a better Christian Grey," another wrote.

"I thought it was from Mad Men... Hummm," someone else posted.

"Mr. Draper will see you now," another wrote.

"Just saw this in Chicago. Did a double-take. Time to call the lawyers," another fan commented.

However, some felt "Fifty Shades" wasn't copying because it looks like a typical movie poster that has been done countless times.

"Basically it looks like every poster ever," one user wrote.

In other "Fifty" news, rumors surfaced that actress Katie Cassidy could be playing one of Christian's former submissives. Author E.L. James teased fans on Instagram by posting a photo of the actress with the caption: "Katie Cassidy... Isn't she flexible?"

Cassidy was previously linked to play Anastasia Steele's best friend, Kate Kavanagh but the role went to Eloise Mumford. Now, the rumor mill claims the blonde beauty could star in the film as Leila Williams. For those who need a little reminder, Leila and Christian's relationship happened about a year or two before the events in James' book.

She leaves the kinky f**kery behind when she meets her husband but ends up cheating up on him with a guy named Geoff. Leila is heartbroken  - and sorta goes mental - when Geoff is killed in a car accident.