I'm sure we all have.....but to go from being extremely vocal,pious and scathing is another matter surely. She is hardly struggling to keep the wolf from the door, so if true is a sell out of what she said she was all about borne out of pure greed.
Personally any celeb who does advertising come across as desperate and greedy. She is over exposed already, to her fans great but to those in the middle it could be a total turn-off.
I don't mind the odd bit here and there, and as long as it's a reasonable brand fit, but with some people it gets to a point where it totally distracts from their 'work' and credibility.