The 39-year-old, who already has a son Leo, 2, with her husband Javier Bardem, revealed that she found it difficult to stop breastfeeding when the day came.
'I was breast-feeding my son 13 months, and I plan to do the same with my daughter,' she said in the interview.
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And Cruz isn't the only famous face who chose to breastfeed their child, with Victoria's Secret Model Miranda Kerr being pictured nursing her baby son FInn backstage at a Victoria's Secret show in 2011.
Clueless actress Alicia Silverstone and Secretary star Maggie Gyllenhall have also revealed they are breastfeeding advocates, with pop star Pink saying on the subject:
'I think breastfeeding is healthy and natural and it's a comfort to my baby, so I can give a s*** what anyone else thinks.'
The star added that she almost had a run in with a man in a restaurant over her decision to breastfeed, as he walked by and expressed his disgust.
'Carrie [Pink's husband] said, "You're starting fights in restaurants? I said, "I will…I will fight, hold my baby."
Blimey, no one mess with that mother!