NBC's 'Smash' is turning out to be a real career resurgence for singer/actress Katharine McPhee. The 27-year-old brunette stunner recently showed off her gams in a tub for GQ and she's followed that steamy spread by nabbing the cover of the March issue of Self.

McPhee looks, well, smashing on the cover of the magazine, in a black and white, skinny striped tube dress, which hugs every one of her hard earned curves. There's also that ear-to-ear, girl-next-door grin. Kat is so the type of gal you bring home to mama. She's a keeper and she's never looked better.

In the accompanying feature, McPhee spoke about her workout regimen, which is on the backburner favor of the exercise she gets from five-hour dance rehearsals for the show. She said, "I feel it in my thighs and calves, but it's so stop-and-go, I miss my real workout." Calorie burning is calorie burning, no matter what exercises you do.

Her official workout routine, devised by a trainer, would crush mere mortals and is designed to burn upwards of 1,000 calories per session. That tells us the body that McPhee is showing off on the cover of Self is hard earned!