Lindsay Lohan will go to jail, but will probably not serve full 30-day sentence: Experts

Troubled star Lindsay Lohan is likely to be jailed once again, but this time she may not serve a full 30-day sentence, legal experts have suggested.

The 24-year-old is back in trouble after testing positive for cocaine at a random drug screening two weeks ago.

"There's no question in my mind: she's getting that 30-day jail sentence," the New York Daily News quoted Los Angeles defense attorney Trent Copeland as saying.

"(Her judge) took the unusual step of allowing her to be released from in-patient rehab early. Then within days she goes out and fails a drug test. She knew what she was risking," said Trent.

Factoring in good behavior and jail overcrowding, Lohan could satisfy a 30-day stretch in about five days, multiple sources agreed.

She reportedly flunked a second random test with amphetamines in her system, reported TMZ.com.

The struggling starlet admitted at least one violation on Twitter early Saturday.

"Regrettably, I did in fact fail my most recent drug test," she tweeted.

It's likely Judge Fox will sentence her immediately since she already confessed and appears ready to pay the piper, said local DUI attorney Paul Takakjian.

"If Judge Fox said on the record that she'd get 30 days for a dirty test, it's highly unlikely she'll receive anything less. He'd lose credibility," said Takakjian.

Previously Lohan spent 14 days behind bars and 23 in rehab after missing court-mandated booze counseling classes related to her back-to-back DUIs in 2007.