Lindsay Lohan has reunited with her estranged father Michael at the Californian rehabilitation clinic where she is receiving treatment for drug addiction, RadarOnline.com has exclusively learned.

"It was an emotional reunion… there were hugs, kisses and even a few tears when Michael and Lindsay first saw each other," a source with knowledge of the meeting revealed to RadarOnline.com.

PHOTOS: Celebs Who Have Been To Rehab

It is a stunning and dramatic turnaround for the 24-year-old Hollywood wild child, who has perpetually blamed her one-time drug addict dad for her problems.

The pair met soon after 1pm on Sunday at the Betty Ford Center in Rancho Mirage, California, we're told.

PHOTOS: Lindsay Lohan Leaves Court Friday To Return To Rehab

"Lindsay met Michael at Betty Ford and the pair spent hours together... it was not a fleeting encounter, this appeared well-planned in advance," the source said.

"They also went shopping at a local Palm Desert mall, where they were seen walking around together and at one point, were in a jewelry store."

When RadarOnline.com contacted the Lohan patriarch for comment about the encounter, the 50-year-old dad-of-four remained tight-lipped: "I have pledged not to comment about anything relating to my daughter.

"However, what I will say is that I am an incredibly proud father tonight. My daughter is progressing extraordinarily well."

PHOTOS: Lindsay Lohan's Mug Shot Revolution

A source close to the actress told RadarOnline.com that her father's visit was at her invitation, while her mom, Dina, was back in New York preparing to appear on NBC's Today Show.

"Michael turned up at Betty Ford with some gifts and items for Lindsay," said the source.

Bizarre Video: Tila Tequila Bashed At Birthday Bash

It was the first time father-and-daughter had been in the same room since Michael showed up at Linday's apartment in April with the Los Angeles County Sheriff's Department.

At the time, a livid Lindsay took to Twitter to dismiss Michael's dramatic cop call as the work of a "pathological liar".

She Tweeted: "When will it ever end... it's been going on my whole life with him - hasn't he caused enough pain?"

Previous to that clash, Michael hadn't spoken face-to-face with Lindsay since August, 2009, around the same time that her Hollywood home was broken into and he helped her move into a new apartment.

PHOTOS: Hollywood's Most Scandalous Women

Lindsay has said her problems with cocaine, booze and pills got worse when Michael started talking to the media about his daughter, in 2007.

She blasted: "I think my biggest focus for myself is learning how to continue to get through the trauma that my father has caused in my life."

FIRST PHOTO:  Lindsay's First Rehab Shopping Trip

After completing about five weeks of rehab at Betty Ford, RadarOnline.com has learned Lindsay will undergo therapy with Michael, in an attempt to get to the bottom of the bad feelings she has toward her father.

"Michael is prepared to do anything to get it right this time," said one source.

A Los Angeles judge ordered the troubled starlet to stay in a drug rehabiltion program at Betty Ford until at least January 3, 2011, after she tested positive for cocaine during a random drug test in September.

RELATED STORIES:

No Jail For Lindsay Lohan; Judge Orders Her To Stay In Rehab

EXCLUSIVE INTERVIEW: Dina Lohan On Lindsay: 'We're Taking It Day By Day'

Probation Report: Lindsay Lohan Feels Powerless About Being An Addict; Says She's Broke

Lindsay Lohan has been spotted outside the safe confines of the Betty Ford Center and RadarOnline.com has exclusive details on why.

EXCLUSIVE PHOTOS:  Lindsay Lohan's Family Album

As we revealed first, the Hollywood wild child has been photographed shopping at Forever 21 and on a movie date at a Rancho Mirage, California, mall near her treatment center.

But Lindsay is not getting any special treatment, a source close to the situation has insisted to RadarOnline.com.

Lindsay Lohan had another field trip back into the real world, RadarOnline.com has learned. Accompanied by at least two other women from the Betty Ford Center, Lilo went to a book store and the movies, reports Hollyscoop.com.

Trying her best to be low-key and wearing a hooded sweatshirt, Lindsay was spotted at The River shopping center in Rancho Mirage, CA.  The Betty Ford Center is located just a few minutes away.

PHOTOS: Sexy Stars Who Have Been Arrested

She browsed for a bit and then bought some magazine, an eyewitness said.

As Border's closed, the group walked across the mall to the Century Theatres multiplex where the new weekend hits Megamind 3D and Due Date had opened earlier in the day.

PHOTOS: Celebrity Mugshots

As RadarOnline.com reported, on Tuesday Lindsay made what is believed to have been her first trip off the grounds at Betty Ford.

She hit up the Forever 21 store in nearby Palm Desert.  In an exclusive interview with RadarOnline.com, store manager Tiffany Bennett described the actress as looking "really, really good."

Managers at Borders and Century Theatres declined to comment about Lindsay when contacted by RadarOnline.com on Sunday.

PHOTOS: Hollywood's Most Scandalous Women

Lindsay's mother, Dina Lohan, no doubt will be doing a lot more talking when she appears on Today Monday morning for another interview with Matt Lauer.

FIRST PHOTO:  Lindsay's First Rehab Shopping Trip

Related Stories:

Lindsay Lohan Taking Her Betty Ford Counseling Seriously

Lindsay Lohan Considering Meeting With Her Estranged Dad Michael While In Rehab

Lindsay Trying To Untangle Herself From Lawsuit