WHEN Call Me Maybe first hit the airwaves, many people thought that the catchy bubblegum pop song was sung by another Disney-made teenager.

But when listeners found out that the singer was Carly Rae Jepsen, they were shocked.

Why? Well, it’s definitely not because she’s Justin Bieber’s protege but because Jepsen is not even a teenager anymore. She is frigging 26 years old.

To be fair, the reason why many people were caught off guard with the singer’s age was not because they are ageist.

It’s simply because they know of another 26-year-old female pop star and couldn’t even imagine that particular singer singing a track that goes, “Hey I just met you / and this is crazy / but here’s my number / so call me maybe”.

Who is this pop star you ask? Well, it’s none other than Lady Gaga, the Mother Monster herself.

Gaga is known for her out-of-this-world style, personal anthem songs, uninhibited sexuality and crazy antics on and off stage.

So to realise that these two women share the same age and yet have such diverse styles, it’s quite … unsettling.

Come to think of it, there are many celebrities who share the same age but are as different as night and day when it comes to their personalities, style and overall attitude.

First up, we have 22-year-old Taylor Swift who is obviously someone who has a bright outlook on everything in life. Despite her many heartbreaks, she still sings about finding love and has frequently said in many interviews that she’s a romantic who believes in the magic of love and is yet to give up on it.

Swift knits, bakes and posts cute photos of her grey cat Meredith (whom she named after the character Meredith Grey in Grey’s Anatomy) on Twitter. Come on, how much more positive can this young woman get? She knits, y’all! Okay, that means she’s also boring … but who cares.

On the other hand, there’s Kristen Stewart, who at 22, projects a “darker” image. She may play a vampire-lover who gives up mortality in the Twilight series, but somehow, when you watch most of her interviews, you can’t help but feel as if Stewart has given up on real life as well.

Stewart is often morose and seems as if she’s very uninterested in everything that goes on around her. She is sullen, rarely smiles and always photographs as if she had just sucked on a lemon.

Yes, she’s an “awkward” person in real life, but come on! Stewart has been in the industry for so many years now, she must surely already know how the game works. And since she’s an actress (at least that’s what some people call her), she could at least fake enthusiasm, no?

Other age-twinsies include Taylor Momsen and Dakota Fanning, two 18-year-olds who are total opposites when it comes to … well, everything.

While Fanning played a washed-out drug-abusing rockstar in The Runaways, that stint would be the closest the actress would get to portraying such a character.

Momsen? Well, she gave up her clean cut, good girl Jenny from Gossip Girl image to pursue one that suggests she’s heavily into the sex, drugs and rock n’ roll kind of lifestyle. With her risque fashion sense, Momsen is definitely the poster girl for “Girl gone wild”.

Talented child actress Fanning would never act anything like Momsem – unless it’s for a movie role, of course.

Another pair of child stars who share the same age is Miley Cyrus and Selena Gomez, who are 19. While Cyrus is engaged and all tatted up, Gomez is the squeaky clean, girl next door kind of girl every mother wishes for.

Cyrus has been blasted for her salvia-smoking, pole dancing, lap dancing, and almost nude photo scandals and yet, it doesn’t seem as if the girl can be tamed. She simply just doesn’t care y’all.

Gomez on the other hand, well, she’s just busy with Bieber … who is busy producing more songs for Jepsen, who honestly, is just too old for any more bubblegum pop songs. Sigh.

Sharm says: I may not be as successful or talented as my age-twinsies Beyonce Knowles and Alicia Keys … but boy, do we all share the same thigh size!