Liranyana, I really don't know what your problem is. Yes you have a problem by the way. Natasha's career would have NEVER been affected if she did the show. I really don't know if you refuse to believe that she was actually in the show in 2005 and 2006. In case you haven't noticed, it didn't affect her what so ever.
If she's off getting another Vogue cover or a campaign instead of the show, then at least she's doing something awesome which we can all agree on. The VS show pay's a ton of money, the girl gets to be on television, and she get's to have fun. If you don't support than, then there is something wrong with you.
Oh and by the way, nothing is confirmed until the day of the show.