Former Grey's Anatomy actress *Katherine Heigl *is demanding $US6 million ($6.35 million) from the bosses of a New York-based drugstore chain after they allegedly used her image on Twitter without her permission.
The Knocked Up star was photographed, below, leaving a Duane Reade pharmacy with two bags full of purchases earlier this year. The snap was featured in a tweet posted on the company's official social networking blog on March 18.
The accompanying caption read: "Love a quick #DuaneReade run? Even @KatieHeigl can't resist shopping (at) #NYC's favourite drugstore".
However, Heigl has taken issue with the unauthorised promo and has filed a suit demanding compensation, according to TMZ.
If she wins, the actress plans to donate the funds to her animal welfare charity, the Jason Debus Heigl Foundation.