Jacqueline, who welcomed Ella into the world with fiancé and former TOWIE star Dan Osborne at the beginning of the year, posted the picture on Instagram last night (4 September).
The EastEnders star and first-time mum told her followers: "Ella's bed time hair is unreal! goodnight everyone x."
Meanwhile, Jacqueline has also teased her return to Albert Square.
Last month, it was reported that Jacqueline has been secretly filming scenes for EastEnders following a return from maternity leave.
And the actress now appears to have confirmed the exciting news!
Jacqueline, who plays Lauren Branning in the BBC One soap, also Instagrammed a picture of her character stood in front of the famous Walford set.
Commenting on the snap, she posted a pair of emoticon eyes along with the caption: "Guess who's back?!"
There is no official date for when we can see Jacqueline back on our screens, but the announcement has certainly got fans in a spin.
One follower commented: "OMG, you're my number one favourite!" Another added: "Yesss! Can't wait!"
It'll be good to have you back, Jacq!
Celebrities who have welcomed babies in 2015
Copyright: Twitter @VanessaLachey