But, who knew she was hiding under it?
The former Gossip Girl star told Elle France she would never chop her locks because the long length makes her feel more comfortable.
''My hair is my security blanket, it helps me conquer my shyness," Blake told the mag. "I like having a lot of it, like a curtain, and I especially like it to look natural, like it hasn't involved any effort."
So, how exactly does she maintain her healthy 'do?
''My secret for that is my Mason Pearson hairbrush, which gives my hair volume and shape," Blake said.
Her other secret weapon is her colorist, Rona O' Connor.
"[She's] a real artist," Blake continued. "She looks at hair like it's a canvas and thinks about color in a special way."
''I have an appointment every six to eight weeks, when I feel brave enough to sit in a salon for three and a half hours!''
As far as how Blake keeps her killer bod in shape, it appears to be nothing else but good genes, saying she skips the gym.
"I don't exercise! But I should, because I know what happens when I don't... It's a lot nicer when you're pulling on your jeans to not struggle to do up the top button," she went on.
And she'd rather eat what she wants than adhere to a strict diet plan.
"I love to eat! Its one of my favorite things in life, so there's no way I'd deprive myself of something, it would be like banning myself from my biggest hobby," Blake said. 'I love cooking too... so, no, you can't really say I pay attention to what I eat.''
Blake was recently featured whipping up a meal for Vogue's webseries Elletra's Goodness.
Click here to watch her in action.