[Question] How do I slim down my workout leggings? Sewing Machines Parts and Sales in Los Angeles

Hey there! I’m a longtime lurker but I love sewing and have a few projects under my belt.

I’m losing weight and hope to lose a lot more (thank you, Weight Watchers!) and I have many pairs of beautiful and well-made workout leggings from rei and other places. I’m worried that as I lose weight (I’m hoping to go down two sizes, from xl to m) that my leggings won’t fit as snugly in my thighs or waist. I don’t have a serger, but I may pick one up if the cost vs buying new leggings is worth it. I guess what I’m asking is, would a serger do this for me or could I take them to a tailor to have them professionally resized and what should I expect if I do go?

Thank you very much ☺