This is the first Doctor with Jill. They are wrapped up warm, presumably it is cold. Jill is, I think, a model or an air hostess (not entirely, I suspect, because of chauvanism, but because of the opportunities for outfits presented). She's a bit bigger than the Doctor - so probably something nefarious involving shrink rays is involved.
This is the first Doctor with Jane. Again wrapped up against the cold. Jane is also, I think, a model or an air hostess. The Doctor is wearing a white hat because (at least according to my Dr Who Paper Dolls book) this worked better with the special effects in The Web Planet. The shrink ray is clearly still in effect.