The spotlight first time turned from the 'Fallin' hitmaker to her three-year-old son Egypt during the charity event, reported Contactmusic.
Keys, 33, beamed with pride from her seat in the front row as the tot walked down the runway in a grey tweed blazer, puppy print sweater and tartan pants.
"Egy's first runway show! Wow! My lil' baby! #proudmamamoment," Keys posted on Twitter.