I gained a lot of weight after my first two and I did not wear it well. I went from caring deeply to nothing. It was a phase that lasted about 4 years and 2 kids so I can't blame it just on being a new mom.
After I finally got down to a more reasonable weight for my height I started caring again. I had a phase where I cared about it A LOT and that tapered off to what I now think is a reasonable balance but what I'm sure is seen by some as unreasonable vanity.
Although I'm not sure I'd call it trying to be 'hot'. I think once I got the minivan and started saying stuff like, "The next person who picks their nose has to pick the nose of everyone in this line", and, "Who has a poopy diaper? I know its not me", that was over for me. At this point I'm settling for "Clearly Exhausted But Trying".