Jennifer Arnold posted a sweet photo of her two kids playing by the sea

The adorable kids are getting to an interesting age and finding their real passions, it’s great to watch them grow.

As reported by People, after a year-long hiatus, ‘The Little Couple’ is back on TV screens every week. The loving family returned for Season 12, and their fans can't get enough of Jen Arnold, Bill Klein and their gorgeous kids, Will, 7, and Zoey, 6.

Since the show began in 2009, fans watched as the family grew with Will’s adoption from China in March 2013 and Zoey’s adoption from India in October of that year. This season, the family-of-four has tackled everything from Hurricane Harvey to Halloween.

In their book, Think Big: Overcoming Obstacles With Optimism, which was released 2 years ago, the duo revealed that Jen actually got pregnant in between the adoptions after years of struggling with infertility caused by her skeletal dysplasia affection.

After going through two years of fertility treatments and surrogacy followed by miscarriages, this was unexpected. But at a later doctor’s appointment, they learned the pregnancy was nonviable.

Their daughter’s difficult transition didn’t make things any easier. Jen told People magazine that Zoey blamed them for the change she has gone through. She really wanted nothing to do with them.

The spunky little cutie was born on September 22, 2011, and was adopted by Jen and Bill at two years old on October 15, 2013. Her adoption was featured on Season 6 of The Little Couple in 2014, after another brief hiatus.

But these days, the foursome is happier than ever! “Life has been this incredible and crazy and extraordinary road full of wonderful surprises,” Bill writes.

'Life has definitely changed a lot since bringing Zoey home from India,' the 42-year-old mother of two revealed, speaking touchingly about the toddler's transformation from 'a very frightened little girl' to a 'bright-eyed, happy so well-adjusted two-year-old.'

Much like their adopted son Will, Zoey also has dwarfism. Bill and Jen made it a point that they wanted to adopt a child with special needs as they have dealt with similar experiences, and in this way teach people about the condition.