The singer will embark on a three-year run of concerts at Caesars Palace in March, but said that she won't let it interfere with feeding four-month old sons Nelson and Eddy.
She told Access Hollywood, 'I can either go to them or they can come to me - it's going to be practical, it's going to be easy since I'm still breastfeeding the babies, so it's every three hours - for both.
'The show is an hour and 40 minutes. Then I have time to shower and get loose and relax and breastfeed the babies again and then have a bite and go to bed myself.'
The 42-year-old added that her 10-year-old son Rene-Charles is enjoying his new brothers.
She said, 'He's (Rene-Charles) in school, he's got his buddies, he's 10 years old. Of course he's playing funny face with them, you know, he's doing all that type of things.'