How stunning does Dianna Agron look here at the premiere of Glee The 3D Concert Movie?

Dianna Agron at the premiere of Glee The 3D Concert Movie (WireImage)

I’m seriously digging the shaggy, sexy cut, so I thought you might enjoy this breakdown from her hairstylist Giannandrea:

“I started with wet hair and razor cut her bob into a more playful ‘Shab.’ This is what I call this hair cut! This cut is a progression of the bob but it has more life and does much more when you style it. Then I added Kerastase Volume Active Mousse to the whole head and roots.

“I blow dried the hair – just air, no brushing – until the hair was completely dry. I then brushed it with a large round Mason Pearson brush, I use a brush just for the bangs and blow it straight. The other part of the head was just scrunched and bent with my hands.

“I then used Klorane Dry Shampoo Spray on the whole roots and top of the head, and back brushed the top part of the head. Finally, I set hair into place with L’Oreal Elnett Hair Spray.”