Katharine McPhee Goes Blonde at 'American Idol' Finale!
Katharine debuted her blonde hair at the event, which she got after wrapping season two of Scorpion.
“#blondes have more fun…. At least for 3 months. Hiatus from #scorpion has officially begun! #mechesalon thanks @traceycunningham1 ❤️❤️,” Katharine wrote on Instagram with the below selfie.