Actress Rebel Wilson was forced to take to Twitter this week to address allegations she had been lying about her age, but it turns out she's not the only star bending the truth when it comes to her date of birth.

A woman claiming to be a former classmate of Rebel's says the actress' real age is 36, seven years older than the Bridesmaids star says she is. "Her name is, or was, Melanie Elizabeth Bownds, and she’s 36, she was born in 1979 and we left school in 1997," the source told Australian magazine Women's Day.

Rebel herself tweeted her annoyance at the Australian media for printing such a story, writing, "OMG I'm actually a 100 year old mermaid formerly known as "CC Chalice" ….thanks shady Australian press for your tall poppy syndrome x"

Ouch. Whether the story is the truth or just a bitter ex-classmate trying to get some press remains to be seen, but Rebel's not alone in telling a few age-related fibs.

Here are some other female stars who've hidden their real age, with mixed results…

1. Jennifer Lopez
If J-Lo had her way, we'd all still think she was a couple of years younger than she is, but unfortunately the singer was outed back in 1999. For years J-Lo insisted her date of birth was sometime after 1970, but after police questioned her following a nightclub shooting involving her then-boyfriend Puff Daddy, her real date of birth was revealed as 1969, making her 45 now. All the same, Jenn still says her "mental age" is somewhere between 16 and 18. 

 

2. Mila Kunis
Mila is definitely guilty of lying about her age to further her career – but in her case it was to make her seem older not younger. The mum-of-one auditioned for That 70s Show aged just 14, telling casting directors she was almost 18. Luckily for her, Mila was kept on as a cast member even when her real age came to light, and went on to star in the show alongside Ashton Kutcher for 8 years. To think if she hadn't lied, little Wyatt Isabelle might not even exist!

 

3. Nadine Coyle
"What date ah birth did ah say?" Poor Nadine Coyle was kicked out of the ill-fated Irish Popstars band Six after telling the judges she was 18 rather than 16. It all worked out in the end though, as she went on better things with UK Popstars: The Rivals girlband Girls Aloud. 

 

4. Geri Halliwell
As well as claiming she was 21 (rather than 25) when the Spice Girls first launched, Geri also celebrated her "29th birthday" quite a few times before bandmate Victoria Beckham revealed to the press that Ginger Spice had already turned 30. Meow!