Kim shares photos of her two sons -- adorable Saint cuddling his baby brother Psalm

He's only three years old. But it seems Kim Kardashian West's little lad is already okay with being in the limelight.

On Sunday, the 38-year-old celebrity shared an Instagram snap of him cuddling up to baby brother Psalm, who was  born via surrogate on May 9.

Kim captioned it: 'Saint asked me to take a pic of him and his brother this morning.'

And it quickly amassed almost 509,000 hits from the reality stars 143 million followers .