The 29-year-old Burlesque star, who has two-year-old son Max with her soon-to-be ex-husband Jordan Bratman, said that being a mother has brought her a new kind of happiness.
She told OK, 'Being a parent allows you to beam with pride on a daily basis.
'Even the little things bring us so much joy… like singing as I put Max to bed or going trick-or-treating and seeing Max dress up.'
And she added that despite her hectic schedule, she values the importance of family, and makes it a priority to see as much of her own mother as possible.
'I go home to Pennsylvania a lot to see my mum and my brother. There is no place like home. It means the world to me to have such a supportive family,' she said.