You may obtain the following special clothes: Liberty Sanitation Dept. Outfit: By completing the Taking in the Trash mission. Hospital Scrubs: If you took them during the mission Flatline Balaclava: By completing the Three Leaf Clover mission. Albanian Biker Jacket: By completing the mission I Need Your Clothes, Your Boots and Your Motorcycle. Sweater "Happiness is... Land": It's lying on the ground at the entrance of the Statue of Happiness. Claude's Outfit: The outfit closely resembling that of the GTA III's protagonist may be obtained after the mission The Holland Play, should you choose to kill its owner.
Fingerless gloves were heavily featured on the game's promotion material, although in-game, Niko doesn't wear them and are nowhere to be bought. They can however be spawned with adequate trainers.