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

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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 .