Natalie Portman hasn't stopped and getting back into shape.

The new mother ventured out today in workout gear, covering up in a warm coat, and returned to her New York apartment looking like she'd just been through an intense workout. http://nataliaportman.blogspot.com/

Working up a sweat: New mother Natalie Portman covers up her workout gear in New York

The 30-year-old was glowing and red-faced as she made her way home.

Portman has kept a low profile since the birth of son Aleph in June, and was only pictured out and about for the first time this month.

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And it seems that Natalie is enjoying her time off from work.

Entertainment Weekly reports that Portman has turned down a role in the indie film Adaline, which was expected to be her first job after returning from maternity leave.

The film, which was also offered to Katherine Heigl, is about a woman who mysteriously stops ageing after an accident.

Active: The 30-year-old looked puffed out as she returned to her New York home after a workout

But a spokesperson for the actress has confirmed she won't be taking on the role after all.

Portman has remained in the spotlight despite not working, with films Thor and Your Highness being released in the last few months.

The Black Swan star, who is engaged to Aleph's father Benjamin Millepied, discussed looking forward to becoming a mother in an interview earlier this year.

She said: 'With my child, I think I will just thank them. It's sort of been a protection.

New father: Portman's fiancé Benjamin Millepied was pictured running errands last week near the couple's home

'It feels like a protection against all the hoopla and the part that keeps you centred where your meaning is and what is actually important in the midst of shiny stuff that's superficial.'

Natalie added: 'I'm sure I'll make lots of mistakes, but I'm open to learning.'

Natalie and her future husband Benjamin met on the set of the film Black Swan, on which Benjamin was the lead choreographer and Natalie's dance partner.

When she accepted her Best Actress Oscar earlier this year, she paid tribute to her French husband-to-be, saying: 'My beautiful love, Benjamin, who has now given me my most important role of my life.'

Read more: http://www.dailymail.co.uk/tvshowbiz/article-2031615/Natalie-Portman-gets-active-baby.html#ixzz1WVE4lz7V