Nina Dobrev Wears Hair Knot Trend In Nylon Magazine. One of the biggest hair trends that is growing in popularity for the 2012 beauty season, is the look of hair knots. The look was seen all over the runways at New York Fashion week, and it’s a look that is simple yet very trendy. This month Vampire Diaries star Nina was featured in the Nylon magazine rocking the trend. In the magazine she’s seen rocking everyday fashion with a messy knot on her head. Look below to see photos from the shoot.