Hey sister, go sister, soul sister!
These two reunited to perform 'Lady Marmalade' at Christina Aguliera's Liberation Tour.
She brought out Lil' Kim to help her perform the popular song.
Aguliera was wearing a sparkly gold jumpsuit and Lil' Kim was wearing a white robe over a low-cut black top!
This performance was exactly what we needed to take us back in time!
Watch the video below for a trip down memory lane!