Charles stepped out solo for the opening of 'Sorolla: Spanish Master of Light' at the National Gallery in London.
After greeting the glamorous Queen with a kiss, Charles and Letizia smiled and joked together - with an onlooker revealing Charles even looked a little 'flirty' at times!
Queen Letizia wore a stunning blue floral dress for the occasion, accessorising with drop earrings.
Meanwhile, Prince Charles appeared dapper in a striped blue suit, with a matching tie and pocket handkerchief.
As he and the Queen paused to discuss the artwork, Charles appeared thoughtful.
Meanwhile, Charles’ wife Camilla – the Duchess of Cornwall – was attending the races in Cheltenham.
She and Princess Anne attended Ladies Day as part of the Cheltenham Festival – with Camilla presenting a trophy to winning horse trainer Nicky Henderson during the glamorous event.