Lindsay Lohan was "bummed" her house arrest forced her to miss her younger brother's 16th birthday party.

The troubled actress - who has been ordered to stay inside the confines of her apartment in Venice Beach, California, Until June 29 while she serves a sentence for violating her probation and theft of a necklace - is finding it hard not being able to go outside especially when it means not partaking in family occasions such as Cody' birthday.

Speaking to Life & Style magazine, she said: "I'm a very social person, and I like being outside, especially in Venice Beach. I'd like to get out more - just going out and having dinner. I was really upset not being able to go to my Little Brother's birthday party. He just turned 16. That bummed me out."

However, Lindsay hasn't been left entirely alone during her house arrest as she's had plenty of visitors.

She said: "I've been having a lot of work-related meetings. Sometimes my friends come over. And I get to see my sister, Ali, which is nice."

But one thing her guests won't find when they come over to visit it alcohol, because she no longer drinks.

She said: "When my friends come over, they're not drinking. Alcohol is not in my house, so it's just not a part of my life."

Lindsay, 24, was sentenced to three years probation, 120 days in jail and complete 480 hours of community service after taking a necklace from an upmarket Los Angeles boutique and breaching the terms of her 2007 probation.

The 'Mean Girls' star - who pleaded no contest to stealing the $2,500 necklace - will carry out her community service at a downtown Los Angeles women's shelter and undertake janitorial work at the county morgue.