The MTV stars from both Teen Mom and Teen Mom 2 got together this weekend for their reunion show but one of its biggest names – Amber Portwood -- was noticeably absent.

The troubled young mother was released from a Madison County, Indiana correctional facility February 24th but is still under strict probation supervision and is fitted with an ankle-monitoring tracking device.

Teen Mom Catelynn Lowell may be squeaky clean on TV — but she's not as straightlaced you'd think. "She's definitely not as innocent as she seems," a source reveals to Star. While MTV keeps her vices under wraps on screen, the 19-year-old — who, along with fiancé Tyler Baltierra, famously gave up daughter Carly for adoption — "is very forthcoming about her partying lifestyle," explains the source.

From Anderson, Indiana to Hollywood, California, the Teen Mom cast soaked up the sun as they filmed the reunion show for season 3 and RadarOnline.com has the photos.

PHOTOS:  Amber Portwood & The Rest Of Teen Mom Cast Shoot Their Reunion Show

Amber Portwood, Tyler Baltierra and Catelynn Lowell all shots scenes at the trendy Redbury Hotel in the heart of Hollywood.

Portwood's own mother, Tonya, was in town to support her, despite previously blaming the reality show for her daughter's anger and violence problems.

PHOTOS:  Amber Portwood & Gary Shirley, Together Again

But there was nothing but love on set this time as Portwood was snapped giving her mom an affectionate kiss.

The young moms were all excited about the filming, taking to their Twitter pages to update their fans.

EXCLUSIVE PHOTOS:  Amber Portwood - Before She Was Famous

"In L.A. Its sooo nice here!" tweeted Tyler.

And while Portwood's baby daddy, Gary Shirley - who is also in L.A - wasn't part of Sunday's filming, he also tweeted, encouraging fans to tune in to the show on MTV.

PHOTOS:  Amber Portwood Leaves Jail

PHOTOS:  Amber Portwood & Gary Shirley Share Time With Daughter Leah

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16 And Pregnant fans watched in horror last week as Christinna Renee Robinson was pressured by the grandmother of her baby's daddy, Isiah, to take a DNA test and prove that he is indeed the father of Christinna's daughter, Destiny.

PHOTOS: Stars Who Have Adopted Children

But things are looking up for the level headed teen mom who spoke exclusively to RadarOnline.com about how she has turned her life around, moved back to New York, is attending school and focusing on getting her degree.

16 and Pregnant's Markai Durham has big plans in life: to attend college, earn a doctorate in mammalogy, and  have a dream wedding - all while raising a new baby as a teenage mom. RadarOnline.com spoke exclusively to Markai concerning her future, her beliefs about sex-education, abstinence, abortion and adoption , and how she is coping so far.

Radar: What made you want to go onto the show?

Markai: "I wanted to be on the show because I wanted girls just like me to know they aren't alone. My story is intense and I wanted to share it with the many girls that I know are struggling with being a teen parent. "

Teen Mom star Amber Portwood made headlines for her infamous physical attack on Gary Shirley, her now ex and father of her baby, which spurred an ongoing police and child protective services investigation. But RadarOnline.com has learned exclusively that baby Leah is staying with her father until Amber finds a safer home.

“Amber is getting ready to move into a new home where she feels she and Leah will be safe,” a source close to Amber told RadarOnline.com.

PHOTOS: Teen Mom Amber At Water Park With Baby Daddy

Portwood, 20, spoke to US Magazine saying, "Child Protective Services agreed it was safer for her to stay at Gary's because of all the photographers outside my house.”

Amid claims she left her daughter Sophia at a child care facility for 12 hours a day and sometimes up to seven times a week, Teen Mom Farrah Abraham has chosen to speak out to RadarOnline.com, declaring: "I would never forget my daughter."

EXCLUSIVE PHOTOS: New Pics Of Teen Mom Farrah

Childcare worker Brittney Scheer, a licensed provider in Council Bluffs, Iowa, who looked after the tot for nine months, says the first time she met the 19-year-old single mom she "showed me the diaper bag and went out the door".

Teen Mom star Amber Portwood and her on-again/off-again boyfriend Gary Shirley just can’t keep their hands off each and local law enforcement are becoming a regular sight around the house as a result.

After coming under fire for smacking her baby-daddy Gary on national television, the tables turned on October 20 when Amber called police, claiming she was pushed out of her Indiana home by Gary while in her underwear!

READ THE POLICE REPORT

According to the police report obtained by RadarOnline.com, Madison County Sheriff Lt. Timothy Basey and Officer Adam Stephenson responded to the domestic disturbance incident in the early morning hours and quickly separated the couple to question them about the incident.

Gary explained to Lt. Basey that while the couple was watching a movie, Amber “got mad” when he received a text from a male friend but Amber thought it was from a girl!

MTV's hit reality show 16 and Pregnant is back in full swing and in this week's second episode, teen Felicia Cooke is facing the many challenges of being a new mother while being the first in her family to graduate from high school.

EXCLUSIVE PHOTOS: Felicia Cooke's Life After 16 & Pregnant

RadarOnline.com spoke exclusively to Felica about the joys of her new daughter, her rocky relationship with the baby's daddy - and her regret she didn't use protection.