Don’t be boring or “dress like a man” at work, unless you mean using ties, classic vests or masculine hats which is great! I still hear “women don’t look serious wearing sexy stuff at work”, I think about skirts not being to short, or classic shirts or t-shirts with wonderful shoes on. I love wearing clothes man can’t wear, like skirts and heels. Feminine business looks are the best.
Skirt is Mango, vest is Vero Moda. The t-shirt is French Connection, and the shoes are really old but still marvelous.