If you're looking to send your Sim to work in an outfit of your choice, rather than the default set for the career, you'll need to cheat in Sims 4.

How to edit sims in Sims 4 FAQs How can I edit my pre-existing sims? You can either shift-click on your sims and hit Modify in CAS, or click on a mirror and choose Change Sim.

Need to know how to promote your sims using career cheats in Sims 4? It’s incredibly rewarding to have your sim work hard and earn promotions through skills and dedication. But cheating also works.

Here's how to change your Sims traits in The Sims 4 using cheats and without by using the Re-Traiting Potion.