Kate Winslet This is almost getting boring for Kate Winslet...

The British star has scooped yet another major win - this time at the 15th Screen Actors Guild Awards in Los Angeles.

Kate's supporting actress gong came for her role in The Reader - which has already won her a Golden Globe, and a best actress Oscar nomination.

But unlike the Globes, this wasn't a double whammy for Kate, with Meryl Streep pipping her to the best actress accolade - for which Kate was nominated for Revolutionary Road.

At least it gives some of the other ladies a vague chance...

Heath Ledger received another posthumous award for best supporting actor for his part as The Joker in The Dark Knight.

And in terms of best actors, it was Sean Penn's moment for his role in Milk.

Best film cast went to Slumdog Millionaire - giving it more than a fighting chance at the Oscars next month.

For a full list of the winners, see below:

FILM

Outstanding Performance By A Male Actor In A Leading Role:
WINNER: SEAN PENN - MILK
Other nominees:
Richard Jenkins - The Visitor
Frank Langella - Frost/Nixon
Brad Pitt - The Curious Case Of Benjamin Button
Mickey Rourke - The Wrestler

Outstanding Performance By A Female Actor In A Leading Role:
WINNER: MERYL STREEP - DOUBT
Other nominees:
Anne Hathaway - Rachel Getting Married
Angelina Jolie - Changeling Heath Ledger
Melissa Leo - Frozen River 
Kate Winslet - Revolutionary Road 

Outstanding Performance By A Male Actor In A Supporting Role:
WINNER HEATH LEDGER - THE DARK KNIGHT
Other nominees:
Josh Brolin - Milk 
Robert Downey Jr - Tropic Thunder 
Philip Seymour Hoffman - Doubt
Dev Patel - Slumdog Millionaire 

Outstanding Performance By A Female Actor In A Supporting Role:
WINNER: KATE WINSLET - THE READER
Other nominees:
Amy Adams - Doubt 
Penelope Cruz - Vicky Cristina Barcelona
Viola Davis - Doubt 
Taraji P Henson - The Curious Case Of Benjamin Button 

Outstanding Performance By A Cast In A Motion Picture:
WINNER - SLUMDOG MILLIONAIRE
Other nominees:
Doubt
Milk
Frost/Nixon 
The Curious Case Of Benjamin Button 

TELEVISION

Kiefer Sutherland - 24: Redemption 
Tom Wilkinson - John Adams
Laura Linney
Outstanding Performance By A Female Actor In A Television Movie Or Miniseries:
WINNER - LAURA LINNEY - JOHN ADAMS
Other nominees:
Laura Dern - Recount
Shirley MacLaine - Coco Chanel 
Phylicia Rashad - A Raisin In The Sun
Susan Sarandon - Bernard And Doris

Outstanding Performance By A Male Actor In A Drama Series:
WINNER - HUGH LAURIE - HOUSE
Other nominees:
Michael C Hall - Dexter
Jon Hamm - Mad Men 
William Shatner - Boston Legal
James Spader - Boston Legal

Outstanding Performance By A Female Actor In A Drama Series:
WINNER - SALLY FIELD - BROTHERS & SISTERS
Other nominees:
Mariska Hargitay - Law & Order: Special Victims Unit
Holly Hunter - Saving Grace
Elisabeth Moss - Mad Men Alec Baldwin
Kyra Sedgwick - The Closer

Outstanding Performance By A Male Actor In A Comedy Series:
WINNER - ALEC BALDWIN - 30 ROCK
Other nominees:
Steve Carell - The Office
David Duchovny - Californication
Jeremy Piven - Entourage
Tony Shalihoub - Monk