Leading the fashion fundraising pack: Emmy Rossum goes for sleek and stylish as Tori Spelling turns out in hippy chic for star-studded charity event
01:53 GMT, 12 March 2012
It appeared to be one of the most star-studded events in the showbiz calendar as a whole host of celebrities turned out to show their charitable sides.
And while Emmy Rossum showed up to John Varvatos' House Benefit looking sleek in a white frock earlier today, Tori Spelling went for hippy chic in her get-up.
The stars spent the afternoon at the designer's boutique in Los Angeles and mingled with the likes of Alice Cooper, Steven Tyler and Zoe Salmon.
Stylish stars: Emmy Rossum and Tori Spelling led the fashion pack at John Varvatos' charity event in their varying outfits
Emmy led the style pack as she went for a classy number consisting of a white layered frock with a short cream tailored jacket.
The ensemble showed off her petite frame, while she added some colour with a purple pair of heels.
And she finished the look off with a simple brown clutch and an intricate necklace with her hair down and poker straight.
Charitable: The outside concert was held to benefit the Stuart House programme, run by designer John Varvatos
Boho chic: Tori turned up to the event on Sunday afternoon in Los Angeles with her husband Dean McDermott
It was a far cry from Tori's choice, which was more of a bohemian number with a floorlength printed gown.
The brown, blue and cream patterned dress gave her a summery feel with the off shoulder cut.
And she also went for a bare-faced look with her platinum locks loose above her shoulders.
Star turn-out: Zoe Salmon, Maggie Grace and Tom Felton also showed up to the extravaganza as they rocked the red carpet
Looking like she was going for a stroll along the beach, Tori opted for brown leather shoes and a matching shoulder bag, as she was joined by husband Dean McDermott.
While Emmy and Tori made the biggest impact at the event, it was American Idol judge Steven Tyler who made the biggest effort on the red carpet.
The rocker was clearly in a jovial outgoing mood as he posed for a number of photos, larking about for the cameras.
Poser! Steven Tyler was in a jovial mood as he greeted the man of the day – fashion designer John Varvatos
Show off: The American Idol judge spent his time moving along the red carpet as he practised various poses
Leather parade: Ian Somerhalder worked his rock look as he met up with Alice Cooper
Wearing jeans and a cream shirt with tailored jacket, Steven's mood even rubbed off on Varvatos himself as he also pranced about with the singer.
The celebrities had all turned out for the outdoor charity concert, which included a performance by Dave Matthews to raise funds for Stuart House – a programme of the rape treatment centre at the Santa Monica-UCLA medical centre.
…And Ian's girlfriend Nina Dobrev showed up in a bright blue jacket with skinny jeans
Following suit: David Schwimmer and Terrence Howard were among the actors who lent their support to the benefit event
More A-list support came from Zoe Salmon, who went for smart casual in skinny trousers, black boots and a light jumper.
Actress Maggie Grace, former Friends star David Schwimmer and supermodel Cindy Crawford were also in attendance.
As were Terrence Howard and rocker Alice Cooper, who also posed as they entered the event via the red carpet.
Thanks to the star turn out it's clear John Varvatos is a popular man and designer.
The fashion boss is currently working on an NBC TV show called Fashion Star, which is due to debut in the US on March 13.