Playboy model Holly Madison, pictured with Duke and chef Lindsay Crolius, shown with Stella Blue teamed up to support a cause that they both want elevated.  They hope to get the word out that people should adopt a pet in order to put the puppy mill industry out of business.

They have teamed up with Last Chance For Animals, a national non profit organization dedicated to eliminating animal exploitation.

Check out more gallery photos below.

Click here to see Hugh Hefner’s new twin girlfriends.

Photos:  WENN

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