Lindsay Lohan is grilled on her alcohol addiction by Oprah Winfrey.

The troubled actress appears on 'Oprah's Next Chapter' following her 90-day stint in rehab and the 59-year-old star takes advantage of the situation by asking the starlet some pressing questions about her obsession to substances.

During the 15-second teaser of the interview, which debuted on Monday morning (05.08.13), Oprah asks: ''Are you an addict?'' before adding, ''what does it feel like to be both an adjective and a verb for child-star-gone-wrong?''

The interview - which airs August 18 - will be the first discussion 'The Canyons' star has had about her stay at the Cliffside Malibu Rehabilitation Centre.

The flame-haired beauty has also made a light-hearted guest hosting stint on E!'s talk show, 'Chelsea Lately', which is set to air tonight (05.08.13).

A source told E! News, ''She is taking this really serious. She wants people to know the days of her clubbing and partying are over and she is a new girl.''

The actress remains on probation for cases involving the theft of a necklace and lying to police about driving when her sports car crashed into a truck on Pacific Coast Highway in June 2012.

She has also been ordered to continue therapy until next year.