Much like Donatella Versace, British retail chain Topshop is feeling charitable lately, calling upon its shoppers to help Corinne Day battle cancer. The famed photographer has captured some of Kate Moss’s most iconic images, including her infamous Vogue photo shoot in the ‘90s.

Teaming up with Premier Model Management, the two forces are attempting to raise the $164,000 needed for Day’s treatment. Apparently, all they’re asking of you is a text (“moss”) to 60777—the message costs roughly $1.60, with 40% of each one sent going to the charity.

Once you’ve sent the text, you’ll be automatically entered in a chance to win one of those photographs, signed by Kate Moss herself.

So how about it—with a simple text and a mere $1.60, let’s make a difference and help Corinne in her time of need.