I honestly see no difference. The tip is bulbous in all pictures. The only differences I see are in how the light is hitting it and where the shadows are.
The 96 photo is different, but should be disregarded since her nose isn't bulbous there at all, and was before and after. She was going through a pudgy nose period.
young photo... shorter and pudgier, but thats normal. It still has the same basic shape, though, with the dents over the nostrils.
early modeling photo on the left, compared to now.
I really don't see it.