Is it acceptable to wear the same outfit every day?
One of my faculty colleagues who just received tenure (at my r1 university) has worn basically the same outfit (same colored button-down shirt with khaki trousers) for the past decade - from graduate school to his current position (he may have indeed been wearing this his entire life, but we only have data for the past decade). I believe his closet only has one type of shirt and trousers. 

Aside from gentle ribs from others about his 'uniform', it's well tolerated by others as it's a minor eccentricity compared to some of the other faculty.  Just be open to someone asking you if you: 1) have multiple shirts or a single shirt; 2) wash them regularly.

tldr: If it saves you money / brain-cycles  / spoons / closet-space to wear the same uniform clothing every day, do it. It worked for Steve Jobs, it can work for you.



Fine print: There may be a gender factor as men in academia and industry who basically wear a uniform are well known but it is rare to encounter women who do the same. This requires more exploration.