What style of clothes should a girl wear when she first joins a listed company?

It is more appropriate for girls to wear professional clothes or casual clothes when they just join the listed company. The main reasons are: professional clothes and casual clothes are more generous and formal, and girls are easy to wear, move and work. Secondly, professional clothes and casual clothes are more elegant and graceful, inadvertently showing advanced. Just like a TV announcer, generous but not fancy.