Lara is wearing somewhat sensible clothing for the tasks she is performing. Oh wait no she needs to be tank top booba short shorts fighting a bear made of 3 triangles sorry
Part of the move from animation to live action has to be making the aesthetic more realistic, unless you're going for something super stylized. If we see a "real" Lara in a snowstorm in inappropriate attire it's way more likely to be uncanny compared to a cartoon version of Lara doing the same thing.