The daughter of Grant (Ross Kemp) and Tiffany Mitchell (Martine McCutcheon), Courtney disappeared from Walford - along with her dad - when she was just two-years-old.
However, in 2006, little Courtney Mitchell returned to Walford and proved to be a complete and utter terror.
Constantly bullying Ben (back when he was small, bespectacled and a fan of musicals), Courtney proved to be a force to be reckoned with. And, when Ben told her that Grant had killed her mother, there was hell to pay.
However that summer, after finally accepting that her dad was NOT a murderer, Courtney moved to Portugal for a fresh start with Grant, and hasn’t been seen since.
Until NOW, that is! Here's the lowdown on what she's up to these days.
How old is Megan Jossa?
She is now 19-years-old and describes herself as an "aspiring actress" on Twitter. And we'd recommend you follow her on @megjossafor regular updates on her newly grown-up life. Because it's always fascinating to see someone you knew as a kid turning into an actual grown-up, right?
What does Megan Jossa look like these days??
Erm, check it out:
Is Megan Jossa related to Jacqueline Jossa?
In a word: yes, they're cousins. And don't they look oh-so-similar these days? It seems as if Megan could be set to be just as successful as Jac, too...
What TV shows has Megan Jossa been in?
Since leaving EastEnders all those years ago, Megan’s landed roles in the Bill and BBC Three's Coming of Age.
And she also tried her hand at theatre, playing Debbie in the West End show, Billy Elliot.
Anyone else predicting a glittering career for this talented little lady?