Sadie looked effortlessly glamorous with her raven bob styled in a sleek side-part and wearing a black and white floral print shirt.
His friends could be seen laughing out loud as Rafferty good-naturedly went to wipe icing off his face, with his sister Iris Law, 16, and Radio 1 DJ Nick Grimshaw also seen at his lavish birthday dinner.
If you’re wondering “How to flirt with a girl if facing her makes me nervous?
” – don’t worry; turn to online chat (even if you know your girl in real life). You’re flirting with your girl; you’re not her boyfriend yet.
Aftermath: Cheekily sharing a group shot of Rafferty with cake all over his face post cake smash the star captioned the pic 'When mamas naughty and puts @raff_law face in his cake!! #naughtymama'As well as Iris, Rafferty has younger sibling brother Rudy, 15, as well as half brother Finlay, 26 and half sisters, Sophia, eight and Ada, two - yet he is the first to burst on to the model scene.
The Dior model - who plays the guitar, piano, bass, drums and keyboard - is a big fan of clubbing and DJs in his spare time.