The actress, who plays Stacey Slater on the BBC soap, announced their arrival last week with an adorable family picture.
She has now shared that she and husband Matt Kay have named the newborn Gipsy Olive.
Lacey posted a picture on Instagram on Wednesday of the baby sporting an adorable knitted jumper with ‘Gipsy’ written across the back.
Her EastEnders co-star Natalie Cassidy commented: ‘Just the best.’
Bianca Jackson actress Patsy Palmer wrote: ‘Omg i need a cuddle rn.’
‘Oh my….’ Diane Parish, who plays Denise Fox, wrote, along with heart-eyed emojis.
Announcing the arrival of her third child on Instagram last week, Lacey shared a picture with husband Matt – who she married in 2017 – and the newborn nestled between their two other children Dusty and Trilby.
‘🩷Our hearts are full 🩷’, she simply wrote alongside the photo.
Lacey gave birth to daughter Dusty in 2019, with son Trilby following in 2021.
The actress is currently on maternity leave from her role as EastEnders’ Stacey.
While it is not yet known how Stacey will be written out to accommodate Lacey’s leave, the character was recently dealt a blow with the news the council will be closing down her bap van with the rest of the Turpin Road market, leaving her livelihood at risk.
Stacey is also currently in a love triangle with ex-husband Martin Fowler (James Bye) and her former best friend Ruby Allen (Louisa Lytton).
Lacey recently revealed her hopes for Stacey and Martin to make things work long-term.
‘I always think Martin and Stacey would be a wonderful old couple, but I don’t know,’ she said.
‘I’d love to see them together forever, but who knows. It always seems to go a bit pear-shaped when they are together, so maybe they’re like Ross and Rachel [from Friends].’