black trousers

Jessica Alba has been sporting a number of layered looks lately, but we particularly love the cool-weather add-ons of her latest London outfit. The actress topped her navy-and-black combo — navy moto jacket, black trousers, and black Rupert Sanderson ankle boots ($721, originally $961) — with a gray fur trapper, marbled fingerless gloves, and a thick black scarf. Jessica completed her bundled look with a suede bag, black nail polish, and a bright red lip. Mimic Jess's street style with her exact ankle boots, a navy jacket and black trousers, then top it off with a fur trapper hat and fingerless gloves.

From the red carpet to everyday ensembles, black and white is one color combo that oozes sophistication, which is why we are crushing hard on Kim Kardashian's latest travel look. She styled a white tank and matching blazer with slouchy black trousers and black strappy sandals after touching down in Miami. Kim then accessorized her polished pairing with blackout aviators and a houndstooth scarf tucked neatly in her crocodile Hermès tote. Re-create Kim's sleek style with a white blazer, loose trousers, and black strappy sandals for a sleek date-night look.

On the Spring 2013 runways we saw a lot of designers pairing dresses over pants, and it seems Emma Watson already took note when she wore a black strapless Christian Dior dress over black trousers at the London premiere of The Perks of Being a Wallflower. The actress completed her unique style with black Christian Dior pumps, a heart key necklace, and diamond stud earrings. While Emma's latest red-carpet ensemble is not mainstream (just yet), we dare any fashion risktakers to follow suit and dabble with the new trend now. For a subtle start, pair a black dress over black pants, then when you feel more experimental, you can play with colors and prints.

After debuting a successful Spring 2013 show at New York Fashion Week, Victoria Beckham continued her fashion streak in the city. For a lunch out, she wore a crisp white button-down with pencil-leg black trousers, creating the perfect and easy-to-mimic office-chic look. Her accessories included sleek black pointy pumps, a white chain-handle Victoria Beckham bag, and aviator sunglasses. Re-create Victoria's outfit with your own white blouse and black pants for your next business meeting, and you'll definitely garner major attention.

Among a sea of ladylike lace, brocade numbers, and mixed prints, Rachel Bilson was a step above the rest working a sleeveless tie-bow Malene Birger blouse with black Alexander McQueen peplum trousers at the Summer TCA party in Beverly Hills. The tie-bow detail of her sleeveless top and small ruffle accent on her cigarette pants lent just the right amount of feminine flair to Rachel's menswear-inspired look, while her Shoemint pointed pumps and a side-part updo completed her streamlined style perfectly. Pair a similar tie-bow top with black cigarette trousers and light pink pumps to re-create her chic look for the office or up the glam factor with this leather Naven skirt ($154) and sky-high black pumps for a night out.