Hilaria Baldwin gives birth to baby boy

Los Angeles - Alec Baldwin and his wife Hilaria have welcomed a baby boy into the world.

The actor's 31-year-old yoga instructor wife announced the birth of their son Rafael Thomas on Instagram by posting a picture of the baby's tiny hand.

She captioned the image: "We are happy to announce the birth of Rafael Thomas Baldwin."

We are happy to announce the birth of Rafael Thomas Baldwin ??

A photo posted by Hilaria Thomas Baldwin (@hilariabaldwin) on Jun 17, 2015 at 4:36am PDT

The birth comes 22 months after the couple - who tied the knot in 2012 - welcomed their first child, a daughter named Carmen.

Hilaria documented this pregnancy with pictures of her growing bump on Instagram, keeping fans updated on her progress.

#AllMySons check it out @guild_hall ...it truly is amazing ?? #BaldwinBabyBump

A photo posted by Hilaria Thomas Baldwin (@hilariabaldwin) on Jun 16, 2015 at 8:21pm PDT

???? #BaldwinBabyBump

A video posted by Hilaria Thomas Baldwin (@hilariabaldwin) on Jun 10, 2015 at 6:51pm PDT

However, the impending birth has not stopped Hilaria from continuing with her busy lifestyle, which has recently included penning a fitness and wellness book.

Meanwhile, Alec - who already has a 19-year-old daughter, model Ireland, from his marriage to actress Kim Basinger - revealed earlier this year just how much he was looking forward to the birth of his baby boy.

He said: "(I'm) blessed, very blessed. We're having the baby and that's almost surreal to me."

Hilaria also admitted she was thrilled Carmen will have a brother close to her age.

She said: "We're really excited to have another baby! We definitely wanted Carmen to have a sibling near her age."