They welcomed their third child in September.
And on Wednesday Alec Baldwin and his wife Hilaria left two of their tots at home as they took their 18-month-old son Rafael for a stroll in New York.
Alec, 58, was in a silly mood as he joked about with his little boy who sat bundled up in his stroller.
Out and about: Alec and Hilaria Baldwin took a stroll with their son Rafael, 18 months, in New York on Thursday
Curiously the 30 Rock star braved the plunging Manhattan temperatures in just a t-shirt and trousers while his wife of four years kept warm in a padded coat.
The couple are also parents to Carmen, three and Leonardo, three months.
Meanwhile Hilaria has opened up about her health struggles.
In excerpts of her The Living Clearly Method book, obtained by People, Hilaria describes how, during her time at New York University, ‘a long simmering struggle with anorexia and bulimia’ held the yoga instructor ‘firmly in its grip’ when she was training as a dancer.
Peekaboo! The 58-year-old actor was in a silly mood and played with his little boy as he sat bundled up in his stroller
Look at dad! Alec pulled faces at Rafael as the family waited to cross the street in their neighbourhood
Hilaria wrote: ‘Without realising it, I started drifting away from the playful connection to movement I’d enjoyed as a young child and into a different and darker kind of dynamic: pushing my body to its limits and commanding it to perform through pain or fatigue.’
‘By the time I was 20 years old, my 5-foot-3 frame was at least 20 lbs. under a healthy weight.
‘My nails were brittle, my hair was falling out, my period was MIA, and my energy had tanked,’ confides the brunette. ‘I was miserable and desperate to feel better.’
Hilaria and Alec took their kids to a book store to see her first book, The Living Clearly Method, on the shelves
Reaching for the sky! The yoga pro showed off her skills on Tuesday as she did a pose on a rooftop