Willie Nelson and Playboy models Shane and Sia Barbi are teaming up in a campaign to save wild horses. In a letter written about the cause, Nelson stresses that this is a "bipartisan issue" and that he believes "these horses should be allowed to run naturally on their land" and implores the Bureau of Land Management not to "manage these creatures into extinction."
Nelson states in the letter that he's personally rescued 25-30 horses directly from slaughter.
You can read the full letter here.
The Barbi twins have been champions of the wild horse cause -- in July, they targeted Rep. Doc Hastings, (R-Wash.) for his opposition to the "Restore Our American Mustangs Act," which would provide around $200 million per year to preserve land for the horses to live on.
Check out a few photos of the Barbi twins supporting animal rights causes, and a few images from their modeling careers.