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.

Raise your hand if you’re feeling some serious FOMO for not being at Sabrina Carpenter’s Short n’ Sweet Los Angeles show on Friday night, where Christina Aguilera surprised the crowd, joining the pint sized popstar to delight the crowd with a duet.