TSA's Dress code is divided into three distinct levels: Official Attire, Professional Attire, and Business Casual Attire. Certain competitions require different levels of the dress code to be adhered to - be sure to check your competition's rules to ensure that you are not given a rules violation for not adhering to the proper dress code. Below are explanations of the three levels:

Official TSA Attire: Most Formal
Blazer: Navy blue with official TSA patch
Ties: Scarlet red imprinted with official TSA logo (for males and females)
Shirt or blouse: White, button-up with turn down collar
Pants or skirt: Light gray
Dark socks: Males only (black or dark blue)
Shoes: Black dress shoes (Athletic shoes, combat or work boots are unacceptable)
Sandals: Females only may wear black open toe shoes or sandals

Professional TSA Attire: Less Formal
Shirt: Males or females, button-up with turn down collar
(T-shirt, polo or golf shirt are unacceptable)
Blouses: Females only
Ties: Males required, females optional
Dress pants (Jeans, baggy pants, exterior pocket pants are unacceptable)
Dresses/skirts: Females only (length even with tips of one's fingers)
Dark socks: Males only (black or dark blue)
Shoes: Dress shoes or boots (Athletic shoes, combat or work boots are unacceptable)
Sandals: females only may wear open toe shoes or sandals

Business Casual TSA Attire: Least Formal
Same as professional attire, however a tie is not required, and the shirt or blouse may be a polo or golf shirt. (T-shirt or shorts are unacceptable)