Drew Barrymore is ''working her ass off'' to lose her baby weight.

The 'Blended' actress - who has daughters Olive, two, and Frankie, seven months, with husband Will Kopelman - insists she isn't rushing to shed the excess pounds and gets frustrated by women who claim they snapped back into shape straight after giving birth.

She said: ''It took nine months to build. It should take nine months to get off. I wanted fettuccini alfredo. I didn't want a barbell.

''I was like, 'Don't talk to me about how fast and fabulous you are or it came off. That was not my experience. I'm having to work my ass off until I even think about getting it off.''

The 39-year-old beauty admits it can be tough juggling the needs of two young children.

She told People magazine: ''It's a balance of who gets the attention, and it's a tightrope.

''But it's also a wonderful, amazing journey to raise two kids that love each other.''

The 'Whip It' star adores being a mother and says family is the ''driving force'' behind everything she does.

She said: ''It's amazing. It's the driving force behind how I live my life.''