I've completely stopped putting effort into my appearance since becoming a mom...

I hate the way I look now and it hurts more than I'd like to admit. It's almost like it has become a self fulfilling prophecy. I am not even wearing a bra 90% of the time. My facial features and shape of my face have changed. I am 20 pounds heavier. I own no clothing in my new size so I am limited to oversized t shirts with leggings or baggy pj pants. I am someone who had a full face beat makeup routine, extensive skin care routine and always at least had clean/straightened hair. I used to go to the gym.... I can't even look at myself anymore. Also, discretionary income is always going toward the 2 kids now, so it's hard for me to balance treating myself to ANYTHING. Has this gotten better for anyone?