United Kingdom, April 14 -- Selena Gomez broke down in tears after she was "blown away" by Demi Lovato's latest concert.

The 33-year-old singer and actress got emotional at the opening of Lovato's It's Not That Deep Tour at the Kia Center in Orlando, Florida, on Monday (13.04.26), and afterwards she took to Instagram to praise her pal's gig as "one of the best shows".

Alongside a black-and-white picture of Demi having some lipstick applied during her concert, Selena wrote on her Instagram Story: "I am in tears.

"@ddlovato - this was hands down one of the best shows. Oh and the VOCALS? Psh *blown away. (sic)"

Demi was grateful for Selena's support.

She wrote on her Instagram Story: "Thank you so much for coming!!! Loved seeing you." ...