Neil Patrick Harris & David Burtka Dress as Olsen Twins for Heidi Klum's Halloween Party!

Neil Patrick Harris is that really you?!

The 46-year-old actor and husband David Burtka were totally unrecognizable as Mary-Kate and Ashley Olsen as they arrived at Heidi Klum‘s Halloween Party on Thursday night (October 31)

PHOTOS: Check out the latest pics of Neil Patrick Harris

Neil and David went all out as the Olsen twins in baggy black outfits with long blonde wigs with deep cheekbone makeup and were spotted smoking fake cigarettes as they arrived at the party.

READ MORE: Heidi Klum’s 2019 Halloween Costume – An Alien Who Attacked Tom Kaulitz’s Astronaut!

15+ pictures inside of Neil Patrick Harris and David Burtka arriving at the Halloween party…