Anonymous wrote:OP here. I should add...money is tight, really really tight. Which has added to high stress, holiday overeating, less exercise, etc. Buying new jeans is not something I’m excited about spending money on, especially since I have several expensive pairs in my former size just hanging in my closet.
This sounds like a pretty specific-to-this-situation circumstance, so what ppl normally do isn't particularly relevant.
I think you need to assess how temporary this weight gain really is and how difficult it would be for you to fit back into your fat jeans. In general, wearing too tight clothing for extended periods of time is worse for encouraging weight loss than wearing clothes that flatter you is...but if this is truly a rare one-off, you might be able to get back into your jeans quickly.
Also, even though money is tight, remember that places like Old Navy frequently have sales that make their jeans quite low cost. If you are used to spending a lot more on jeans, you might be able to find something that works for you there but doesn't hurt as much financially.