Usage patterns
華麗な〈物〉a splendid/gorgeous ~ (thing)
She appeared on stage wearing a gorgeous costume.
華麗に〈動詞〉to do (something) splendidly/gracefully
The figure skater danced splendidly on the ice.
華麗な〈事〉a splendid/spectacular (event, performance, etc.)
The ballet company captivated the audience with a splendid performance.