Robin Williams & Daniel Day Lewis -- Twinsies!

3/4/2011 12:20 PM PST BY Johnny Lopez
Oscar winners Robin Williams, 59, and Daniel Day Lewis, 53, must share the same, er, stylist.

Robin showed off his bearded look in NYC this week (left) -- while DDL added a hat and scarf to the shady scruffy chic at LAX on Thursday (right).

Somebody definitely drank the other's milkshake.