Mean Girls star Lindsay Lohan has acknowledged her wrongdoings and is ready and willing to plead no contest to charges that she had stolen a $2,500 necklace from Kamofie & Co., a swanky jewelry store, in Los Angeles.

In February, prosecutors charged Lindsay with a felony grand theft but later the charge was reduced to misdemeanor. The actress was seen on surveillance video putting on the necklace and leaving the store with the item still around her neck.

Earlier, Lindsay refused a plea deal, saying she would contest the charges and stand on trial, saying she did not intend to steal it and had only borrowed it.

However, the Hollywood actress, whose acting career has taken a turn south, had a change of heart last week and in an interview with US talk show host Jay Leno on The Tonight Show, which aired on Tuesday night, said she's learning to deal with the consequences of her poor decisions in the past.

Lindsay, who has been sentenced to 120 days in jail and 480 hours of community service for a probation violation, said she was shocked by the kinda shocked by the jail sentence and didn't really expect the outcome to be what it was.

The actress said the jail term was a wake-up call for her. It was definitely shocking. I was kinda numb, Lindsay, who is free on bail, said.

However, I'm a big girl and I'm gonna do what I'm told to do and that's what I have to do to continue on with working in my life and I'm taking responsibility, she said. I'm a fighter and I know that I have to work to gain back the respect back, and I'm willing to do the work that I have to do to follow through with being an actress.

According to sources close to the developments, Lindsay and her lawyer Shawn Holley are all set to go back to Judge Stephanie Sautner as early as next week and plead no contest to the theft charge. Earlier the actress had turned down a plea deal. Her trial for theft is scheduled to start May 11.

The actress is hoping that the judge will be lenient on her and will not add extra jail term.

A spokesperson for the Los Angeles County Sheriff Department said Lindsay is likely to serve about three weeks of her jail time.

Meanwhile, Lindsay has shown her determination in accepting responsibility for her actions and has signed up for community service at the Downtown Women's Center. It is believed that she will be conducting a theater workshop for underprivileged women at the homeless shelter. The workshop is called Dames Investing in Very Authentic Storytelling, or DIVAS, and emphasizes performance as a way for women to express themselves.

The Freaky Friday star will be serving 360 hours at the homeless shelter and the remaining 120 hours serving as a janitor at the Los Angeles County Morgue.

Do you think Lindsay Lohan has turned over a new leaf? Leave your comments below.

Meanwhile, here's a skinny on Lindsay's interview with Jay Leno on The Tonight Show: