Lily Collins keeps it chic in black and white as she arrives at the 2013 Costume Designers Guild Awards at The Beverly Hilton Hotel on Tuesday (February 19) in Beverly Hills, Calif.

The 23-year-old actress was joined by other celebrities, including Ashley Madekwe and Christa B. Allen.

PHOTOS: Check out the latest pics of Lily Collins

The week before, Lily met up with her good friend Selena Gomez to grab lunch at Sushi Dan in Studio City.

FYI: Lily is wearing a Paule Ka dress, Atwood shoes, Neil Lane jewelry, and a Louboutin clutch.

10+ pictures inside of Lily Collins arriving at the CDG Awards… More Here! »

Jamie Campbell Bower leans in for a kiss from Lily Collins in this exclusive, new still from The Mortal Instruments: City of Bones.

Set in contemporary New York City, a seemingly ordinary teenager, Clary Fray (Collins), discovers she is the descendant of a line of Shadowhunters, a secret cadre of young half-angel warriors locked in an ancient battle to protect our world from demons. After the disappearance of her mother (Lena Headey), Clary must join forces with a group of Shadowhunters, who introduce her to a dangerous alternate New York called Downworld, filled with demons, warlocks, vampires, werewolves and other deadly creatures.

Out on August 23rd, the movie also stars Jonathan Rhys-Meyers, Kevin Zegers, Jemima West, and Robert Sheehan.

ARE YOU EXCITED to see The Mortal Instruments? More Here! »

Selena Gomez rocks heart-shaped sunglasses as she heads to lunch at Sushi Dan on Tuesday afternoon (February 12) in Studio City, Calif.

The 20-year-old actress/singer met up with her good friend Lily Collins for a bite to eat.

“He’s bringing sexy back… And it’s about time!! @jtimberlake killed it!” she recently tweeted about Justin Timberlake.

PHOTOS: Check out the latest pics of Selena Gomez

A few days before, Selena was spotted leaving the Chateau Marmont arm-in-arm with friend Alfredo Flores after attending a 2013 Grammy Awards party in West Hollywood.

FYI: Lily is wearing Matt Bernson ‘Delphine’ sandals. More Here! »

Logan Lerman and Lily Collins skate around the rink in the brand-new trailer for Writers.

Writers follows a successful novelist (Greg Kinnear) whose obsession with his ex-wife (Jennifer Connelly) has sent his fractured family into a destructive emotional tailspin.

Lily plays daughter Samantha, who is pursued by a fellow writing student (Lerman). Nat Wolff stars as Lily‘s brother, who is experiencing first love with Kate (Liana Liberato).

The film (which is also known as Stuck in Love) premiered at the 2012 Toronto International Film Festival last year and will hit select theaters in April.

Lily Collins bundles up from the cold as she takes a stroll with her boyfriend Jamie Campbell Bower on Thursday (February 7) in London, England.

The on-and-off-screen Mortal Instruments couple shared a laugh as they walked down the street together.

PHOTOS: Check out the latest pics of Lily Collins

Earlier in the week, Lily was spotted stopping for some coffee with her mom at Coffee Bean & Tea Leaf in Beverly Hills, Calif.

It was recently announced that Lily has signed on for Love, Rosie with Sam Claflin.

FYI: Jamie is wearing a jacket and Lily is wearing shoes – both from AllSaints!

Lily Collins stops off for some coffee at Coffee Bean & Tea Leaf on Tuesday afternoon (February 5) in Beverly Hills, Calif.

The 23-year-old actress met up with her mom, Jill, before the two headed their separate ways.

PHOTOS: Check out the latest pics of Lily Collins

It was just announced that Lily has signed on for Love, Rosie.

She’ll play the title character opposite Sam Claflin about two best friends who are planning to head to the States for college together when Rosie discovers she’s pregnant after a crazy night out with the most popular boy in school. She encourages Alex to go without her and over the next 12 years their lives change but an undeniable connection remains.

Lily Collins and Sam Claflin have picked out their next projects signed on for Love, Rosie, Deadline reports.

Based on the novel “Where Rainbows End” by Cecelia Ahern, the flick will start filming in May and be directed by Christian Ditter.

Lily will star as Rosie with Sam as her best friend and star-crossed lover, Alex. The pair are planning to head to the States for college together when Rosie discovers she’s pregnant after a crazy night out with the most popular boy in school. She encourages Alex to go without her and over the next 12 years their lives change but an undeniable connection remains.

WHAT DO YOU THINK of the new project for Lily and Sam?