WHERE ARE THEY NOW: Child stars of your favorite reality shows

"The Osbournes" helped launch the reality TV genre where a camera crew follows a family around to capture both mundane and drama-filled moments. Both Kelly and her younger brother Jack were teenagers during the run of the show, which won an Emmy in 2002.

Jack currently co-hosts "Portals to Hell" in which he and paranormal researcher Katrina Weidman investigate ghost sightings and other paranormal activity. He also acts occasionally, and is set to star in the drama "Silent Life" in 2021.

Kelly co-hosted "Fashion Police" from 2010 to 2015. She has also made appearances on "The Talk," "The View," and "The Masked Singer."

The series followed the Kardashian-Jenner family's drama-filled personal and professional lives. When the show began, Kendall and Kylie were mostly featured as the kid half-sisters of Kim, Kourtney, and Khloé.

Kendall became a supermodel and was the highest-paid model in the world in 2017, knocking Gisele Bundchen from the top of the list with $22 million.

Kylie launched a successful makeup brand called Kylie Cosmetics. In 2019, when she was 21, she was named the world's youngest self-made billionaire by Forbes, although they later disputed that. Forbes now lists her worth at $700 million.

The Zieglers appeared on "Dance Moms" from 2011 to 2016. The reality show followed their training and careers in competitive dance and showbusiness, and the dynamics between the dancers, their mothers, and Abby Lee Dance Company owner Abby Lee Miller.

Sia, who cast Maddie in music videos including "Elastic Heart" and "Chandelier," has come under fire for choosing her to play a girl with autism in her upcoming movie, "Music." Sia has repeatedly defended the decision. Maddie will also portray Velma in the film remake of "West Side Story" in 2021.

Mackenzie released her second album, "Phases," in 2018. Both have garnered millions of YouTube subscribers and Instagram and TikTok followers.

Thompson was just 5 when she starred on "Toddlers and Tiaras" before landing her own spinoff about competing in child beauty pageants. "Here Comes Honey Boo Boo" was canceled in 2014 after reports emerged that Thompson's mother "Mama June" was in a relationship with a convicted child molester.

Alana currently lives with her sister Pumpkin, who became her legal guardian after Mama June was arrested and charged with possession of a controlled substance and drug paraphernalia in March 2019. She pleaded not guilty that year.

After the success of the 2006 TLC special "Surviving Sextuplets and Twins," the Gosselins landed their own TV show. The series followed the lives of Jon and Kate, their twins Madelyn and Cara, and their toddler sextuplets: Aaden, Collin, Joel, Alexis, Hannah, and Leah.

When Jon and Kate divorced in 2009, the show was renamed "Kate Plus 8" and shifted to focusing on Kate's life as a divorced mother. The show ended in 2011, then briefly returned from 2015 to 2016.

Kate now stars in "Kate Plus Date," a show about her dating life.

Cara is now a sophomore at Fordham University, where she is a member of the rowing team. Her twin sister, Madelyn, attends Syracuse University.

Kate has custody of four of the sextuplets — Aaden, Joel, Alexis and Leah. Jon has custody of Collin and Hannah. Jon told Today that each group of kids is estranged from the other parent and siblings.

"I wish that all my kids would just be together, hang out together, go to the mall. Just hang out together," Jon said. "Kate and I don't live that far away from each other, but I feel like there is an invisible wall."

"Kid Nation" was a CBS show that aired in 2007 in which 40 kids were dropped into a ghost town in New Mexico and tasked with building their own society. McGoff, pictured second from right, was a member of the "Town Council" that made decisions for the community, and she won a $20,000 gold star prize for her efforts.

McGoff made a YouTube video sharing behind-the-scenes details about her experience on the show.

There are 19 Duggar children: Joshua, Jana and John-David, Jill, Jessa, Jinger, Joseph, Josiah, Joy-Anna, Jedidiah and Jeremiah, Jason, James, Justin, Jackson, Johannah, Jennifer, Jordyn-Grace, and Josie. They were all raised in a fundamentalist Christian household with strict rules regarding all aspects of their lifestyle including dress, media consumption, and dating.

The Duggars made their television debut with a TV special called "14 Children and Pregnant Again!" The popularity of the special led to their own show, "19 Kids and Counting," which followed the family's daily lives and milestones such as weddings and births.

In 2015, a police report surfaced that alleged their oldest son, Josh, had molested minor girls, including some of his sisters, when he was 14. Josh, whose wedding was featured on the show, was also revealed to be a paying member of Ashley Madison, a website for arranging extramarital affairs. TLC canceled "19 Kids and Counting" and launched a new series, "Counting On," without Josh and with minimal appearances by parents Michelle and Jim Bob.

Jill's husband, Derick Dillard, was fired from "Counting On" in 2017 after he tweeted transphobic messages about another TLC star, Jazz Jennings. The Dillards posted a YouTube video in November explaining that they left the show in order to have more control over their lives.

In another video, Jill and Derick said that they had not been paid for their appearances on the show and hired lawyers in order to recover the missing payments.

"There's been some distancing there," she said. "We're not on the best terms with some of my family. We've had some disagreements and stuff, but we're working toward healing definitely and restoration."

Some of the other Duggar girls have also made lifestyle changes as adults. Jana, Jessa, Jinger, and Joy-Anna have posted photos on social media of themselves wearing pants, which girls were not allowed to wear in their parents' household.

"Gene Simmons: Family Jewels" aired from 2006 to 2012. Similar to "The Osbournes," the show followed KISS member Gene Simmons, his partner Shannon Tweed, and their two children.

Nick wrote and illustrated a manga-style comic book called "Incarnate," but production stopped after he was accused of plagiarizing art and plotlines from other comic books. In a statement, he said he was inspired by artists he admired, "and I definitely want to apologize to any manga fans or fellow manga artists who feel I went too far."

He has also been a contributor for The Huffington Post and dabbled in acting.

Sophie also moonlights as an actress, but mainly works as a model and body-positivity advocate. She is also a singer, and released a single with Felix Cartal called "Mine" in July.

Ryan sang ballads such as "And I Am Telling You I'm Not Going" and "I Am Changing" from "Dreamgirls" with a powerful voice that surprised audiences. Videos of her performances went viral.

After her victory, she signed to Columbia Records and released a self-titled debut album.

Ryan took a break from performing to finish high school. She also had two surgeries to repair a paralyzed vocal cord, and stomach surgery due to her high risk of developing esophageal cancer.

Fully recovered, Ryan returned to her roots to compete on "America's Got Talent: The Champions" in 2019, and she released a new EP called "The Reintroduction" featuring original music.

At 12 years old, VanderWaal wowed the judges with original songs played on her ukulele.

After her win, VanderWaal released an album called "Just The Beginning" and an EP called "Perfectly Imperfect" featuring her original songs. She also played the titular character in the 2020 Disney+ movie "Stargirl" adapted from the popular young adult novel by Jerry Spinelli.

• Read more:
• THEN AND NOW: 25 child actors all grown up
• 10 celebrities you didn't know were child stars
• 12 child stars who are still ruling Hollywood