Cat Wetting on Clothes

I also recommend a visit to the vet no matter what to be sure she's physically okay but could you tell us if there are any type of changes or stress in your household? Is perhaps someone treating her differently than what she's used to? Is there a new human or animal addition in the home? If a cat does urinates on clothing it could mean an infection and/or that she is really upset about something.

I once had a cat, Niki, who never urinated outside of her box but then when I had a young lady move in temorarily because she had no other place to live my cat started urinating on clothing or towels left on the floor. Turns out the young lady was not a very nice person and I truly believe Niki simply sensed that. Once the young lady moved out Niki never urinated outside of her box again.

Cats will do this if they have a kidney or bladder infection. They have no way of telling us what is wrong and it might feel better to pee on nice, soft cotton if they are inflamed? I suggest a trip to the vets. My step-mother told me years ago that cats should not be given fish or food with fish in it because it can cause cystitis (this may have only pertained to male cats, can't remember). I don't buy any cat foods that have fish products, just to be on the safe side. She also told me to watch the ash content in canned cat food, again, I can't remember why, etc. (long time ago!) but it did pertain to cystitis.
Good luck to you & your kitty. Make sure the cat has a lot of fresh water to drink to try and flush the system.