If you are the type that likes to try different styles at work in a strict work environment, letting your style fit in is the best option for you.
If you are the androgynous or retro style lady, go for chic styles with a retro feel.
Let your look be smart, not shabby. If you feel a bit too “mature” for the fun and fearless work lady, have a mix of contemporary with a bit 80s in a chic way just like Look 3.
What counts is that whatever style you choose, never go out of your work dress code. Let it simply fit.