While you may be comfortable with your colleagues at work, that doesn’t mean you can show up to the office holiday party in the same outfits you rock on nights out with your besties. Yes, even if it’s a party, it’s still a work-related event, so you should keep things (and your actions!) classy. The easiest way to transition from office attire to a shindig-ready outfit? Employing the art of day to night dressing. With a tweak here and a bold accessory there, any outfit can be worn into the wee hours. One word of advice: Pick out a bold element (be it a loud color or a striking piece) and work your look around that. Oh, and a dark red lip is a girl’s secret nighttime weapon.

Click through the gallery for some seriously fun outfits.