: Performed a tribute to Aguilera's hits, including a highly choreographed routine.

The episode featured a head-to-head competition between and Erika Jayne , with a surprise guest appearance by Christina Aguilera herself. Key Performances

While this specific tribute was on Lip Sync Battle , Christina Aguilera has a significant history with RuPaul's Drag Race that often gets linked to this era:

: Aguilera served as the first guest judge, famously surprising the queens by entering in Farrah Moan -inspired drag.

Watch the iconic moment Christina Aguilera performed 'Fall In Line' live with legendary queens from RuPaul's Drag Race: