This is the hero Leatherface costume worn on screen by Andrew Bryniarski as Leatherface in Texas Chainsaw Massacre: The Beginning.
This particular costume was used from the dinner table scene where Bailey gets her throat slit by Leatherface with a pair of sheers throughout the rest of the film. The costume can be screen matched from bloodstains, stab wounds, along with rips and tears.
More from The Texas Chainsaw Massacre: The Beginning (2006)