The blonde star had certainly made an effort for their night out and showed off her slender figure in a black and green floral print maxi dress.
She teamed the slinky garment with a pair of black peep-toe wedges and a smart black blazer as she arrived hand-in-hand with Tom.
Quality time: Peaches tweeted that she had left baby Astala at home with her old nannyThe musician was modelling his usual kooky style and wore a grey suit, with the trousers worn high waisted, and looked pleased to be out with his fiancée.
The couple have taken to parenthood very well and are often seen out and about with their son Astala.
Peaches continued to post several photos of the youngster this morning - something that has become a daily habit for the former TV presenter.
She began by posting personal snaps of the tot when he'd just woken up and then proceeded to dress him up using a pair of Elton John- esque sunglasses, and a brown hat.
'True love': The blonde star even posted a personal photo of her and Tom which they took while out last night