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We're so used to seeing the likes of Helen Flanagan and Scarlett Johansson flashing the flesh on screen that it's easy to forget that they both started out in show business before they were teenagers.
And whilst Ant & Dec and Aled Jones might not be quite as allergic to clothing (thankfully), they were also fresh-faced youngsters when they first sprang to fame.
But how time flies - and these once butter-wouldn't-melt young stars are now all grown up and looking rather different these days - as our 'Then and Now' gallery shows...
Child Stars: Then And Now
Anna Paquin(01 of28)
Then: Anna won the Oscar for Best Supporting Actress in 1994 at the age of 11 for her role in 'The Piano', making her the second youngest winner in Oscar history. (credit:PA)
Anna Paquin(02 of28)
Now: These days she is best known for her role as Sookie Stackhouse in 'True Blood', for which she won a Golden Globe Award for Best Performance by an Actress in a Television Series – Drama in 2009. (credit:Getty Images)
Drew Barrymore(03 of28)
Then: In 1982, a six-year-old Drew starred in her breakout role as Gertie in Steven Spielberg's 'E.T. the Extra-Terrestrial'. (credit:PA)
Drew Barrymore(04 of28)
Now: Drew has survived alcohol and drug addictions to become a hugley successful actress, screenwriter, film director, producer, model and author. (credit:Getty Images)
Neil Patrick Harris(05 of28)
Then: He played the title characters in Doogie Howser, M.D. between 1989 and 1993. (credit:PA)
Neil Patrick Harris(06 of28)
Now: He is best known for playing Barney Stinson in the US comedy series 'How I Met Your Mother' since 2005 for which he has been nominated for four Emmy Awards. (credit:Getty Images)
Natalie Portman(07 of28)
Then: Her first role was as an orphan in the 1994 action film 'Léon', but mainstream success came when she was cast as Padmé Amidala in the 'Star Wars' prequel trilogy. (credit:Getty)
Natalie Portman(08 of28)
Now: In 2010, Natalie won the Best Actress Oscar for her performance in the psychological thriller 'Black Swan'. (credit:Getty Images)
Brook Shields(09 of28)
Then: Brook gained critical acclaim for her leading role as a child prostitute in the controversial 1978 film 'Pretty Baby'. She continued to model and act into her late teenage years including memorable turns in 'The Blue Lagoon' (1980), and 'Endless Love' (1981). (credit:PA)
Brooke Shields(10 of28)
Now: In the 90s she starred in the titular role of the sitcom 'Suddenly Susan', which ran for four seasons between 1996 and 2000. Most recently, she has made appearances in other US TV shows, including 'That '70s Show' and 'Lipstick Jungle'. (credit:Getty Images)
Kirsten Dunst(11 of28)
Then: In 1994, at the age of 12, Kirsten gained widespread recognition playing the role of vampire Claudia in 'Interview with the Vampire' alongside Brad Pitt and Tom Cruise, a performance for which she was nominated for a Golden Globe Award for Best Supporting Actress (credit:Getty)
Kirsten Dunst(12 of28)
Now: Kirsten went on to achieve international fame for her portrayal of Mary Jane Watson in Sam Raimi's 'Spider-Man' trilogy. Since then, she has starred in box office hits including the romantic comedy 'Wimbledon' (2004), the science fiction romantic comedy-drama 'Eternal Sunshine of the Spotless Mind' (2004) and 'Marie Antoinette' (2006). (credit:Getty Images)
Scarlett Johansson(13 of28)
Then: Scarlett made her film debut in 'North' (1994) and was nominated for the Independent Spirit Award for Best Female Lead for her performance in 'Manny & Lo' (1996) and received further acclaim for her role in 'The Horse Whisperer' (1998) and 'Ghost World' (2001). (credit:PA)
Scarlett Johansson(14 of28)
Now: A bona fide Hollywood sex symbol, ScarJo has gone on to star in numerous blockbusters including 'The Island', 'Vicky Cristina Barcelona' and 'The Avengers'. (credit:Getty Images)
Nicholas Hoult(15 of28)
Then: As a 12-year-old, Nicholas got his big break playing Marcus in the big screen adaption of Nick Hornby's 'About A Boy'. (credit:PA)
Nicholas Hoult(16 of28)
Now: After starring in E4's 'Skins' he went on to land roles in 'X-Men: First Class' and 'X-Men: Days Of Future Past'. Until recently, he was dating Jennifer Lawrence. (credit:Getty Images)
Aled Jones(17 of28)
Then: Aled became famous for singing on the Christmas hit 'Walking in the Air', which reached No.5 in the UK singles chart. The original was featured in the 1982 animated film 'The Snowman', but sung by a different choirboy. (credit:PA)
Aled Jones(18 of28)
Now: Following the axing of 'Daybreak', which he presented with Lorraine Kelly, Aled now hosts 'Weekend'. He had previously fronted 'Songs Of Praise'on BBC One. (credit:Joel Ryan/Invision/AP)
Helen Flanagan(19 of28)
Then: Helen (back row, second left) shot to fame playing Rosie Webster in 'Coronation Street', staying with the soap for 12 years. (credit:PA)
Helen Flanagan(20 of28)
Now: Since leaving 'Corrie', Helen has become most well-known for her scatty ways (as seen during her appearance on 'I'm A Celebrity') and featuring in lads' mags 'Sexiest Women' polls. (credit:Jonathan Short/Invision/AP)
Frankie Sandford(21 of28)
Then: Frankie (along with her Saturdays bandmate Rochelle Wiseman) was an original member of pop act S Club Juniors, who launched in 2001. (credit:PA)
Frankie Sandford(22 of28)
Now: All grown up, a mum-of-one, and now known as Frankie Bridge following her marriage to footballer Wayne, Frankie has been a member of The Saturdays since 2007. She also appeared as a contestant on the 2014 series of 'Strictly Come Dancing'. (credit:Ross Gilmore via Getty Images)
Rochelle Wiseman(23 of28)
Then: A fresh-faced Rochelle was a member of S Club Juniors, along with her Saturdays bandmate, Frankie Sandford. (credit:PA)
Rochelle Humes(24 of28)
Now: Rochelle has been a member of The Saturdays since 2007. She also has a new surname following her marriage to JLS heartthrob, Marvin Humes. The couple have a daughter called Alaia-Mai. (credit:Joel Ryan/Invision/AP)
Billie Piper(25 of28)
Then: After being spotted in a TV ad for pop mag Smash Hits, Billie landed herself a record deal. A handful of No.1 hits followed, including 'Because We Want To' and 'Girlfriend'. (credit:PA)
Billie Piper(26 of28)
Now: After a brief marriage to radio and TV presenter Chris Evans, Billie ditched her pop career and went on to become a successful actress in the likes of 'Doctor Who' and 'Secret Diary Of A Call Girl'. She is married to fellow actor Laurence Fox, who she has two children with. (credit:John Phillips/Invision/AP)
Ant and Dec(27 of28)
Then: The duo first rose to fame as actors on the children's television show 'Byker Grove'. They went on to have a brief pop career as PJ and Duncan - their character names in the series - scoring their biggest hit with 'Let's Get Ready To Rumble'. (credit:PA)
Ant And Dec(28 of28)
Now: Whjere do we start? 'SMTV: Live', 'CD:UK', 'Friends Like These', 'Pop Idol', 'Ant & Dec's Saturday Night Takeaway', 'I'm A Celebrity...Get Me Out of Here!', 'PokerFace', 'Push The Button', 'Britain's Got Talent', 'Red or Black?', 'Text Santa'... just don't mention 'Alien Autopsy'. (credit:Joel Ryan/Invision/AP)