People will dress in what they're comfortable in. They will wear things you may not think look good on them, but who cares? When you say "I think you'd look better in (blank)", it'll make them feel like crap, because they won't want to dress in what they're comfortable in just to please you. They should think they're beautiful in what they love. Beauty isn't from your exterior, it's from the interior. Would you rather be outside in the cold, or inside by the fire?