Sabrina Carpenter‘s Short n’ Sweet Tour concert in Los Angeles became even more special with Christina Aguilera’s surprise appearance. On Friday, the “Espresso” singer welcomed Aguilera at L.A.’s Crypto.

Christina Aguilera flaunted her super-svelte and enviable figure in a daring ensemble during a surprise performance with Sabrina Carpenter on her Short ‘n Sweet tour earlier this month. The 43-year-old multiple-Grammy-winning artist joined the 25-year-old “Espresso” singer at her Los Angeles concert at the Crypto[dot]com Arena on Friday,