The "Your Body" singer ditched her usual dramatic makeup and opted for a more natural beauty look. Instead of bright red lips she wore a peach gloss and she held back on the mascara and eyeliner.
Aguilera also showed off her new, svelte body in a short cocktail dress with an on-trend studded belt.
And she wouldn't be Christina Aguilera, diva extraordinaire without the sky-high Christian Louboutin stilettos.
Wow, did she look different back in the day...