(Images: Getty)

UPDATE 6.00am Thursday 26th Jule 2012

Kristen Stewart has released a statement to People.

"I'm deeply sorry for the hurt and embarrassment I've caused to those close to me and everyone this has affected. This momentary indiscretion has jeopardized the most important thing in my life, the person I love and respect the most, Rob. I love him, I love him, I'm so sorry."

Does this spell the end of the Rob and Kristen?

In what is bigger news than TomKats divorce, Kristen Stewart cheated on long-time BF Robert Pattinson!

According to a report form People Magazine, the 'Twilight' star cheated with her "Snow White and the Huntsman" director Rupert Sanders.

This bombshell came from an anonymous tip-off posted on the magazine's website:

"Kristen is absolutely devastated," a source tells People. "It was a mistake and a complete lapse in judgment."

"She wasn't having an affair with Rupert," adds the source. "It was just a fleeting moment that shouldn't have happened. She never meant to hurt anyone. She's a good person who just made a bad choice."

There haven't been any comments yet, but the Dirt will be all over this story like Edward was to Bella...watch this space!