Saint West Wearing Yeezys

Saint West is showing off his birthright -- those near-impossible to come by baby Yeezys.

Kim and Kanye's tot was cruising around the Big Apple Thursday afternoon ... looking like the most adorable billboard for his pop's kicks, which sold out instantly this week.

Retail price is $130 for a pair, but the 8-month-old probably got the friends and fam discount.

Good to be the Saint.