。
Showbiz is really glamorous.
Literal
Show-business [quot-というのは] really glamorous [copula-だ].
というのは marks the preceding noun as the topic being commented on — a definitional/explanatory frame. ショービジネス is the English loan phrase. 華やか '(being) glamorous / gorgeous / flashy / brilliant' is a na-adjective with a positive tonal reading — of flowers, clothing, public events, or career worlds.