Is it wrong that I want everyone to know that I got a really nice jacket today?
I'm not sure, why do you want to tell everyone?
I'm just really proud of my new jacket.
You should not be bragging about your material gains. Other's will see your behavior as bragging and arrogant. Behave in a more humble way and people will respect you more.
It's just a jacket.
It is just a jacket but telling people about that will make them feel like you're showing off because you have it and they don't. It's better to just let people notice that you have it and tell them it's new rather than bringing it up yourself.