Nicki Minaj has finally announced the gender of her first child as she told fans she gave birth to a baby boy. The 37 year old reportedly welcomed her son with rapper husband Kenneth Petty, 42, at the beginning of October, but has taken to her Instagram feed to confirm the news.The Superbass singer shared a series of congratulatory messages from her celebrity friends and thanked them for their generous gifts before revealing the sex of her child.