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American actress and comedian Lori Beth Denberg was just 18 years old when she was cast as Ms. Hushbaum -- the loud librarian who demanded silence but would constantly cause a loud, distracting ruckus -- in Nickelodeon's "All That" from 1994 to 1998.

Denberg was part of the iconic "All That" cast, which also included Kel Mitchell as ED in the popular "Good Burger" sketch, Kenan Thompson as Dexter Reed also in the "Good Burger" sketch and Amanda Bynes as Ashley .... "thats me!"

"Quiet! No talking! This is a library!"

Before this cute kid with a blonde wig and straw hat was being dressed for big-time acting roles, she was just another kid playing dress-up, growing up in Los Angeles, California.

If you're still having a hard time deciding who this mini woman getting 'wiggy' with it is, just think back to the little girl in "The Lost World. Jurassic Park." One of her first notable, starring roles came in the 2006 film "When A Stranger Calls."

Even though this star no longer rocks the blonde wig, she now sports a shorter hairdo.

Swirled inside this celebrity scramble is an American actor who recently made his Broadway debut, and even though he currently lives in New York City he's known for his big Hollywood stardom.

A true professional in the television industry, this father of two has played hundreds of roles throughout his career but playing a surgeon, and friend of the OG 'McSteamy,' is probably his most notable role to date.

Need one more clue on who this rippled celeb is? Just ask his good pal Shonda Rhimes.

You may have to whip out your Catwoman fighting skills to navigate your way through these two similar snapshots of Anne Hathaway. The actress was recently photographed looking "so chic," wearing an abstract outfit during the 75th annual Cannes film festival in Cannes, France.

There's no doubt that Anne's entrance into the Cannes festival turned many heads, as she rocked yet again another fashionable ensemble, but ... can you pass Miranda Priestly's test and spot the minor differences in these two Anne Hathaway images? Your trip to Paris Fashion Week is dependent upon it!

Before this cute kid was serving up looks on the runway and gracing the covers of countless magazine covers, she was just a little chef cooking up something awesome in Santa Barbara, California.

Modeling definitely runs through the family gene pool for this top model, but she definitely has put her own touch on her craft. Aside from seeing her on the catwalk, you probably have seen her on "The Real Housewives of Beverly Hills."

Still not sure who this posing princess is ... one last hint: her father is one of the richest real estate developers in the world!

American actor Danny Nucci was 28 years old when he was cast as Fabrizio de Rossi -- the Italian native and Jack Dawson's best friend who journeyed on the Titanic ship -- in the 1997 classic romance film "Titanic."

Nucci shared the big screen with some of the greats including Leonardo DiCaprio as the optimistic and poor American seeking to become rich through his journeys, Jack Dawson and Kate Winslet as the rich socialite who is seeking freedom from an arranged life, Rose DeWitt Bukater.

During the 1990s, Danny acted in two other films where he also was killed off: "Eraser" and "The Rock."

Before this girl turned into a teen idol and a multi-award-winning actress, she was a child model .. hanging and posing outdoors in San Francisco, California.

While this photogenic chick with beach-perfect blonde hair is most known for her role in the hit comedy film "Clueless," she's also a loving and goofy mom, who enjoys sharing her tight-knit relationship with her son on Instagram.

Her acting genre-repertoire spans from comedy to thriller. Oh, and speaking of thrillers ... she made her film debut in the thriller "The Crush" in 1993.

American actor and producer Jonathan Lipnicki was just 9 years old when he played George Little -- the Little family's oldest son who accepts and eventually establishes a bond with the family's pet mouse, after winning a boat race together -- in the 1999 film "Stuart Little."

Jonathan shared the big screen with Michael J. Fox playing the mouse voice of Stuart Little, Geena Davis as Mrs. Eleanor Little, Hugh Laurie as Mr. Frederick Little and Nathan Lane as Snowbell.

Lipnicki is also known for playing the fact-spitting little kid Ray Boyd in the 1996 film "Jerry Maguire."

Kourtney Kardashian and Travis Barker are very much head over heels in love ... just check out the pics of their legal wedding in Santa Barbara.

Kourtney and Travis just posted 8 pictures from the ceremony, and you see the newlyweds on the steps where they exchanged vows and kissing in the lowrider convertible they drove off in as husband and wife.

KK and TB are looking sharp ... she's wearing a white dress cut short at the knees and a veil, and he's rocking an all-black tuxedo, which matched their black Cadillac and its white-wall tires.

The couple posed for a pic with his parents before riding off with a "Just Married" sign strapped to the back of the Caddy ... along with a bunch of empty cans trailing behind on strings. Super traditional.

As we reported, Sunday's ceremony in Santa Barbara saw Kourtney and Travis legally get hitched. This time, they had their legal paperwork in order, so they are in fact married.

Kourtney and Travis previously had a dry run in Las Vegas last month, when they exchanged vows in front of an Elvis impersonator at a Sin City wedding chapel, but they didn't have a wedding license.

Before this adorable kid turned into a global pop star ... singing, dancing and owning any stage he stepped on ... he was just hangin' at the beach in his diaper, growing up in Tampa, Florida.

This blonde baby first stepped into the spotlight when he was just 7 years old, which may come as no surprise considering he toured with his older brother ... who just so happened to be in one of the most famous boy band groups known to date.

During the early 2000s, this youngster had all of his fans wanting candy!

After all these years, Harry Hamlin is still lookin' like a dime!

Here's the 38-year-old version of the Golden Globe and Emmy-nominated actor posing as Michael Kuzak from NBC's "L.A. Law" back in 1990 (left).

And, 32 years later the now 70-year-old handsome father of three recently posed for a photo at The Hollywood Show in Los Angeles a few weeks ago, looking camera-ready as always (right). He is gearing up for his first major studio film in 40 years AND the new season of "The Real Housewives of Beverly Hills" appearing alongside his hottie wife Lisa Rinna.

The question is ...

Before this handsome, brown-eyed boy became a clothing designer and a household name, he was simply stealin' bases left and right, dominating his high school's track team, and growing up in Los Angeles, California.

Once this little leaguer's family started to make waves through Hollywood, this bashful little man put his funny dance moves to the test and became a runner-up on "Dancing With The Stars" ... something his older sister can't say.

Still unsure who this funny guy could be? He is known for being a goofball with his partner in crime, Scott Disick.

New York native and actress Julia Stiles was just 20-years-old when she was cast as Kat Stratford -- the smart, non-conforming high school student -- in the 1999 romantic comedy film "10 Things I hate About You."

Stiles shared the big screen with Heath Ledger as the handsome weirdo, Patrick Verona, Joseph Gordon-Levitt as the sweet and selfless new student, Cameron James, Gabrielle Union as the rude pot-stirrer, Chastity, and Allison Janney as the comedic yet disciplinary high school principal, Ms. Perky.

Julia also played Sara in the 2001 film "Save The Last Dance."

Before this smizing teen took the stage as a stand-up comedian and actor, he was just your average boy always up to somethin', growing up in New Jersey.

This funny kid is best known for his roasting abilities and his comedic twist on all things celebrity and political. And if you watch comedy central, well then you most likely have seen his iconic Justin Bieber roast on the "Comedy Central Roast."

Need one more clue on who this jokester could be? He is likely to be seen wearing some kind of hat which is deemed as his signature look.

American comedian and actress Judy Greer is well known for playing the role of Penny -- the funny yet instrumental wedding planner that ultimately pushes her co-worker to date, fall in love and get married -- in the 2001 film "The Wedding Planner."

Greer shared the big screen with other A-listers Jennifer Lopez as the wedding planner, seeking monogamy and love, Mary Fiore, Matthew McConaughey as a pediatrician, and ultimately Mary's love interest, Dr. Steve Edison and Justin Chambers as Mary's childhood boyfriend and her secondary option for marriage, Massimo.

And, don't forget her iconic role in "13 Going On 30" with Jennifer Garner!

It's definitely all about the mama's out there this weekend, but these celebs are celebrating Mother's Day as first-timers with their little ones ... so they deserve a little mom shoutout!

Halsey, Naomi Campbell and Lauren Lane are just a few stars to name that have taken you through their new-mom journey over the past year ... from posting and sharing growing belly-bump pics to the first time they held their precious, new babies!

Emmy Rossum, Abby De La Rosa, and Lauren Sorrentino also joined "The New Mom's Club," as they welcomed their new additions into the world!

Scroll through our gallery to see all of the new-mom-cuteness overload!