The "Break-Up" Diet scores another one... Guess who?

It's Selma Blair!

By Debbie Emery - Radar Reporter

Actress Selma Blair may be the latest victim of the 'break-up diet' as she revealed the dramatic weight loss she has suffered since splitting with boyfriend and father of her child, Jason Bleick, earlier this year.

With a sunken chest, jutting ribs and a gaunt face, the Cruel Intentions star was a shadow of her former bubbly self, and has photos of her startlingly emaciated figure.

Blair, 40, and fashion designer Bleick, 42, broke up in September after reportedly "fighting non-stop" and have since strived hard to be amicable for the sake of their 16-month-old son, Arthur.

Being a working single mom is clearly taking its toll on the Anger Management actress who ran out of the house seemingly without a bra on under her wooly cardigan and in danger of a wardrobe malfunction as she pushed her adorable son along in a toy car.

Blair's skeletal size is reminiscent of how Demi Moore wasted away after she split from Ashton Kutcher in September 2011 following his cheating scandal with a younger woman.

Poor girl...