His life has changed dramatically since finding fame.

But Sam Smith proved he’s making equally dramatic changes to his physique during an appearance in London on Thursday evening.

The British singer, 25, looked slimmer than ever as he joined a host of guests at an Yves Saint Lauren party in collaboration with Sink the Pink at popular Shoreditch nightspot The Curtain.

Sam has not said publicly how much weight he has lost, but he previously admitted to dropping more than a stone in just 14 days.

Slimmer figure: His life has changed dramatically since finding fame, but Sam Smith proved he’s making equally dramatic changes to his physique during an appearance in London on Thursday evening