United Kingdom, March 17 -- Hilaria Baldwin fought back tears as she recalled her heartbreak over losing a baby four months into her pregnancy.

The 41-year-old yoga instructor opened up about the painful experience during an episode of her reality show 'The Baldwins' revealing she had been expecting a child with her husband Alec Baldwin after undergoing IVF treatment only to discover late in her pregnancy that the baby hadn't survived.

Hilaria said: "So, I had a miscarriage ... [I] came out [publicly], had conversations that were hard to have for me. It's a very hard thing to go through.

"I tried IVF and everything seemed to be going really well ... I lost the baby between four and five months ... [The doctors] don't know why she died....