Child support is always modifiable meaning she can bring you back to court and request more.

Alimony can be modifiable too. Your lawyer probably had you both sign an alimony waiver. You would think that would prevent her from changing her mind. Unless the waiver was written specifically as a non-modifiable agreement, she can bring you back in to court for that too.

She does have to have justification besides changing her mind before the court will consider reopening the issues. There has to be some change of circumstance and that's where this "lifestyle change" comes in to play.

If she does manage to get the court to hear it (an I predict she will), I predict you will be ordered to pay her. Tread lightly and be sure you have a lawyer on retainer.