Nina Dobrev, hot vampire onscreen and now cover girl for Cosmo, looks amazing on the magazine's September issue. For her cover look, "The Vampire Diaries" star ushers Fall fashion in her strapless houndstooth dress, matching pumps, and gorgeous, bombshell hair.

Inside the magazine, Nina Dobrev reveals Julianne Hough BFF details and just what her type of guy is.

Nina Dobrev's Cosmo cover look is only one in a long list of the Canadian actress' sizzling outfits. One of those fashion moments include not only a sizzling dress but a glamorous one as well.

In May 2012, Nina attended amfAR'S Cinema Against AIDS Gala during the Cannes Film Festival. The 24-year-old bared some skin thanks to her Elie Saab gown's off-the shoulder neckline and thigh-high side slit. The sequined gown came in the most beautiful blue shade that set Nina's tanned skin aglow.

Aside from red, blue has become a winning colour for Nina Dobrev. Hot weather at a July 2012 awards show had Nina in a teal J. Mendel frock. The multilingual actress wore a sweetheart neckline bustier dress with a short, asymmetrical skirt that once again, showed more than a flash of leg. At the awards, Nina Dobrev and Ian Somerhalder, along with their "TVD" cast mates won a number of awards.

Blue dress number three on this list came courtesy of Nina's Critics' Choice Movie Awards dress in January 2013. Nina Dobrev wore a cleavage-baring, peek-a-boo neckline Monique Lhuillier dress with a full, above-the-knee skirt. The sassy, shell-encrusted number made for another winning red carpet look.

Nina doesn't always go for all-out va-va-voom, but when she does, the results are jaw-dropping. At the "Cowboys and Aliens" premiere in July of 2011, Nina wore Kristen Stewart favourite Zuhair Murad. Needless to say, sheer lace was involved. The actress ruled the red carpet in her figure-hugging sheath in black lace.

At the 2013 Met Gala, sexy, mysterious, and definitely sizzling, described the Monique Lhuillier outfit on Nina Dobrev. Hot leather details, sheer lace pants, a tulle over-skirt and a revealing bustier comprised Nina's most sizzling outfit to date!

Start the slideshow for Nina Dobrev's hot Cosmo cover and her sizzling style.

For more on celebrity style, read:

Nina Dobrev: Red Dress for Variety's Power of Youth; 'TVD' Star's Best Red Outfits [SLIDESHOW]

Kaley Cuoco: Hot Pants at 'Blue Jasmine' Premiere; See Her Most Sizzling Outfits [PHOTOS]

Claire Danes: 'Homeland' Star on Emmy Watch; See Her Best Red Carpet Gowns [SLIDESHOW]

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