Kristen Stewart turns to friends for support following new split from Robert Pattinson

Kristen Stewart has been leaning on her friends since splitting from Robert Pattinson.

The 23-year-old Stewart and Pattinson are reportedly on a 'break' after calling time on their four-year romance, and Stewart has since surrounded herself with a support network of close friends to help her stay positive.

A source close to the star told HollywoodLife.com: "Kristen is super sad. She's leaning on her friends."

The brunette is said to have been spending a lot of time with her Twilight co-star Taylor Lautner, who supported her when Pattinson was in Australia filming The Rover earlier this year.

In the absence of his good pal, Lautner took Stewart out to see a concert and the pair enjoyed an athletic day out at the batting cages.

According to Us Weekly, Pattinson and Stewart have been "having problems" and "fighting a lot" recently, with things coming to a head on May 13, the day of the actor's 27th birthday.

Pattinson reportedly ditched the surprise party planned by Kristen for a guy's night out, leaving the actress in floods of tears.

This isn't the first time the Hollywood couple have called it quits. Pattinson broke things off for two months last summer when Stewart was caught on camera kissing her married Snow White and the Huntsman director Rupert Sanders.

They reconciled last autumn in time to promote the final Twilight saga film, Breaking Dawn: Part 2 and appeared to have put their differences aside.