The candid snaps were taken to promote a charity movement called the ‘We Are Here’ campaign.
The movement was started to encourage people to make a positive difference in the world and question ‘why we’re here’.
She said in a recent interview with the New York Times: ‘I want to gather an army’.
‘It’s time to get people’s attention… People won’t be able to ignore this visual.’
Alicia and her husband of four years, producer Swizz Beatz, are expecting their second child around Christmas time.
The singer revealed her pregnancy to fans earlier this year. She is also mum to a son named Egypt who turns four next month.