How to Dress for a memory defense?
The type of clothing you are choosing when preparing for your graduation these presentation is important as is the way you present yourself.

For men
The typical jean – shirt – suit jacket is a safe choice. It’s the perfect balance between casual and formal. Avoid gaudy or mixed colors, instead stick with the simple (white, blue, and black). Stay away from torn, worn and sports clothes.
Suits can sometimes be costly, and difficult for a student to afford. Remember a suit is an investment. Make good use of your investment and wear it again for your other special occasions.
For last minute purchase, and more affordable option, there is always the thrift store. Don’t expect to find the perfectly tailored suit. They might not even all match, but there is a large selection of options at very low prices.
For women
In terms of outfit, avoid showing the naval, or too much cleavage. Transparent fabrics are also discouraged. Do not mix too many colors and patterns or over accessorize your sets. Keep it simple less is more. Regarding shoes, several options are available to you, rather go for simple pumps.
Discreet makeup will do the trick. Avoid really bright lipsticks. Lose the flashy nail polish. Opt instead for transparent bases or beige, maybe even a nice burgundy but not too dark.
The most important is being yourself and feeling comfortable in your clothes, in order to face the jury with serenity.
Good luck.