Alicia Keys welcomes son Genesis Ali Dean with husband Swizz Beatz and says she is 'so grateful.

YAY she's a mum again,On Saturday, Alicia Keys welcomed her second child, a son named Genesis Ali.

'The joy of joy is joy!! It's a boy!! we are so grateful!!' the 33-year-old Grammy winner wrote on Instagram. She added the hashtag 'blessings' and six hearts.

The singer posted a photo on Instagram that had two baby feet over a purple star with a turquoise background. The prints looked to be from her newborn.

The information on the image read, 'Date: 12/27/2014, Time: 1:52 AM, Weight: 2860 grams, 6lbs, 5ozs.'

Her husband is music producer Swizz Beatz, 36. The two tied the knot in 2010.

Congrats to them.