It’s hard to believe Sienna Miller only gave birth in July.
Making her first public appearance since welcoming baby Marlowe into the world, the actress showed off a super slender frame that failed to betray any signs of baby weight.
The 30-year-old has clearly made an effort to ping right back into shape, and she made sure to show off the results of her hard work in a gorgeous white column Tom Ford dress.
But it wasn't only Sienna's physique that stunned onlookers – the stylish star looked radiant as she sported a postnatal glow.
As usual, she chose an effortlessly cool beauty look that consisted of dishevelled blonde locks with her trademark dark roots and minimal make-up.
The following day, Sienna went for a more casual look as she attended an industry brunch in an upmarket New York neighbourhood.
She paired her navy silk, printed trousers and red ballet pumps with a matching scarlet lip and gold-rimmed sunglasses.
Sienna is busy promoting her new film The Girl while fiancé Tom Sturridge looks after their baby daughter.