Lauren - who was last seen making plans to attend a summer camp in the US - will return to Albert Square later this year and waste no time in letting everyone know that she's now all grown-up.
While the tough teenager looks set to stir up some trouble in Walford after making her comeback, viewers will also see her softer side as she searches for love in her life.
Lauren's keen to find a guy with the right personality rather than judging on looks - but will Max and Tanya's daughter manage to find someone who can sweep her off her feet?
Jacqueline Jossa as Lauren Branning
Speaking of her casting, Jossa commented: "I was so excited when I got the call to say I'd got the part in EastEnders. I've always been a massive fan of the show and it's a dream come true. The character of Lauren Branning will be really fun to play and there are some exciting things coming up."
EastEnders' executive producer Bryan Kirkwood added: "Maddie Duggan did a great job of playing the young Lauren Branning, and we wish her the very best of luck for the future. I'm delighted to welcome Jacqueline Jossa to Albert Square. Jacqueline's portrayal of Lauren has all the classic Branning qualities of toughness, cynicism and sensitivity. Jacqueline is set to be at the heart of Walford drama for some time to come."
As announced in June, new faces will also take over in the roles of Ben Mitchell and Lucy Beale later this year.