Memba Them

American actor and writer Michael McMillian was 23 years old when he first started playing Henry -- Holly's awkward, nerdy friend -- on the sitcom series "What I Like About You" back in 2002.

Michael was amongst many Hollywood greats like Amanda Bynes, Jennie Garth and Leslie Grossman.

American actress Perrey Reeves was in her early 30s when she first started playing Mrs. Ari Gold on HBO's hit show "Entourage" back in 2004.

Perrey was part of an ensemble cast like Adrian Grenier, Kevin Connolly, Kevin Dillon, Jerry Ferrara and Jeremy Piven!

American TV personality Talan Torriero was a junior in high school when he first appeared on "Laguna Beach: The Real Orange County" back in 2004.

Talan -- known for his player ways -- was part of an ensemble cast including Lauren Conrad, Stephen Colletti and Kristin Cavallari.

Actor Brandon Molale was in his early 30s when he played Kevin -- the bulky New York Jets' quarterback with no manners -- in the 2002 rom-com film "Mr. Deeds."

Brandon hit the big screen with Adam Sandler, Winona Ryder, and Steve Buscemi.

American actress Claire Julien was 18 when she played Chloe -- the fashion-obsessed, rebellious teenager who breaks into celebrity homes -- in the 2013 film, "The Bling Ring."

Chloe hit the big screen with Emma Watson, Katie Chang and Israel Broussard.

The film is based on true events, with Paris Hilton, Rachel Bilson, Lindsay Lohan, Audrina Patridge, and Orlando Bloom among the victims of the robberies.

American actor Art Kimbro was in his late 20s when he played Detective Foster -- the by-the-book Beverly Hills police officer annoyed over Detective Foley's rule-breaking ways -- in the 1984 comedy/action film "Beverly Hills Cop."

Kimbro hit the big screen with Eddie Murphy, Judge Reinhold, and John Ashton.

American actor Jonathan Sadowski was in his mid 30s when he first started playing Josh -- the charming and witty entrepreneur -- on the sitcom "Young & Hungry" back in 2014.

Jonathan was part of an ensemble cast including Emily Osment, Aimee Carrero and Kym Whitley.

Norwegian singer and guitar player Morten Harket was only 25 years old when he rose to fame with his band, A-ha, when they dropped their debut album, "Hunting High And Low" back in 1985.

"Take On Me" and "The Sun Always Shines on TV" were a couple of the album's bangers ...

American singer and songwriter Corey Glover was only 24 years old when his band, Living Colour, shot to stardom, winning a Grammy for Best Hard Rock Performance with hits like "Cult of Personality."

American actor Johnny Simmons was in his early 20s when he played Chip -- the sweet and loyal good guy and Anita's boyfriend -- in the horror/comedy film "Jennifer's Body" back in 2009.

Simmons hit the big screen with Hollywood icons like Megan Fox, Amanda Seyfried, and Adam Brody.

Not trying to make you feel old, but "Hannah Montana" premiered 20 years ago ... and we're helping you celebrate by showcasing what the cast looked like then and now!

That's right ... we're giving you the best of both worlds, starting with Miley Cyrus, who played the iconic role of Miley Stewart. The character was famously a teenager who doubled as a notable pop star, Hannah Montana, giving herself the stage name -- along with an infamous wig -- to maintain anonymity and some semblance of normalcy in her young life.

But you know we couldn't stop there ... we also got shots of Billy Ray Cyrus -- Miley's real dad, who also played her father on the show -- Emily Osment, who played Miley's best friend, and Jason Earles, who played Miley's older brother.

And you can also see some of the cast in the "Hannah Montana 20th Anniversary Special" premiering today on Disney+.

American actor Lucas Till was 18 years old when he played Travis -- the small-town Southern guy and the main love interest -- in "Hannah Montana: The Movie" back in 2009.

Till hit the big screen with Miley Cyrus, Billy Ray Cyrus, and Natalie Granger.

San Jose-native Jasmine V (real name Jasmine Marie Villegas) was only 16 years old when she was the bowling and break-dancing love interest in Justin Bieber's "Baby" music video back in 2010.

Since Jasmine V's debut, the Biebs' "Baby" vid has racked up over three billion views on YouTube.

Jasmine now has two baby, baby, babies (ohhh) of her own!

American actress Alexandra Holden was 23 years old when she played Mary Johanson -- the genuine pageant girl and main contestant in the American Teen Princess Pageant -- in the 1999 comedy/drama film "Drop Dead Gorgeous."

Holden hit the big screen with Hollywood icons like Kirsten Dunst, Kirstie Alley, Ellen Barkin and Denise Richards.

American actress Marlee Matlin was only 21 years old when she made history as the first and only deaf performer to win an Academy Award -- for her debut role in "Children of a Lesser God" back in 1986.

Marlee hit the big screen with William Hurt, Piper Laurie, and Allison Gompf.

Guess what she looks like now in her 60s!

Scottish star Billy Connolly was in his mid 50s when he played Il Duce -- the legendary Irish hitman -- in the 1999 action/thriller film "The Boondock Saints."

Connolly shared the big screen with Norman Reedus, Willem Dafoe and Sean Patrick Flanery.