Khloe Kardashian & Kendall Jenner. Picture: Instagram

Khloe Kardashian paid tribute to the "light of her family" Saint West as he turned one on Monday (05.12.16).

The 'Keeping Up With The Kardashians' star wrote a sweet message for the 12-month-old – who is the youngest child of Kim Kardashian West and her husband Kanye West – as he celebrated his first birthday.

She wrote: "Can't believe how quickly time flies! Watching my little Saint grow this past year has been amazing. He's seriously such an angel and could not be more adorable. What a light he's been for our family!"

Happy birthday to our sweet angel, Saint! #family #love #happybirthdaysaint #saintwest

A photo posted by Kris Jenner (@krisjenner) on

Whilst Kim and Khloe's half sister Kendall Jenner added: "Saint, I can't believe it's been a year since you came into our lives! You're the sweetest addition to the fam. (sic)"

Kanye and Kim have had a tough time of it lately after she was robbed at gunpoint in October and the 'Bound 2' rapper was hospitalised in November for exhaustion and sleep deprivation.

However, Ryan Seacrest believes things are "going better now" for the couple, who also have three-year-old daughter North together.

He explained: "I've spoken to Kim. I've not spoken to Kanye, but I think that things are going better now."

I can't believe this was one year ago today. Happy birthday my little Sainty.

A photo posted by Kourtney Kardashian (@kourtneykardash) on

Meanwhile, it was previously claimed that Kanye is living away from the family home as he continues to receive treatment out of the hospital.
A source shared: "He is receiving outpatient care else with a medical team. Kim still seems concerned but is supportive. They don't know for how long Kanye will need outpatient care . There are frustrations and problems, like any relationship, but they love each other deeply ...
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"People in Kanye's inner circle are hoping the hospital stay has made him realise that he needs to take a step back from work and focus on his personal health and mindset. Kanye loves working, but he loves Kim and his family more.

"He had way too much on his plate and it came to a point where he couldn't handle it all, so he just broke. He needs to find a good balance with the two in his life and he'll work hard at finding that."