My bag was delayed 24 hours by United which means that I did not had any clothes.
Thankfully on my carry-on I had brand new underwear. And although I used my pair of jeans, again , I had to buy a new shirt. Before doing this I called United and the told me I could spend up to 50 dollars in clothing and send the receipt to the United HQ. I bought a 42 dollar shirt but would really like to know if the letter with the receipt need to have any kind of information or if there is a form.

Have anyone gone through this?