New mum Jessica Alba is still Fantastic

The Fantastic Four star, 30, wore a black string top and pencil skirt at the opening of the swanky Armani Hotel in Milan, Italy, just three months after giving birth to daughter Haven.

And she stole the show with her simple style and minimal make-up.

Haven, born on August 15, is Jessica's second child with husband Cash Warren. She has an older sister, Honor, who is now three.

The newborn travelled to Italy with her devoted mum although she didn't make an appearance at the party.

Natural beauty ... new mum Jessica

Splash News

Actress Jessica vowed to get into shape as soon as possible after her second pregnancy and was back in the gym after two weeks.

At the time she tweeted: "I did my first day of workout since I had the baby, just cardio for 40 mins. It's a start. Anyone else starting a fitness regimen?"

Bundle of joy ... Jessica with Haven

Big

Her hard work paid off last night as she rubbed shoulders with Maggie Gyllenhaal and husband Peter Sarsgaard at the event.

Giorgio Armani, who personally designed every room in the hotel, was on hand to welcome his A-list guests.

Guests .. Maggie Gyllenhaal and Peter Sarsgaard