Which should I invest in first?

Hi, I’m a 19 year old Senior college student, and I am currently in the dilemma of choosing which Item to invest first. Since I’m young and unemployed, I can only afford a limited number of clothing. I was wondering which one is the best to invest in first:

1. Quality Watch
2. Blazer/Jacket
3. Suit
4. Shoes

Take note that I do have the following items but they are at inferior lever, or cheap. Thanks for your help!