11/11/2013 at 10:40 AM EST
Is that you, Grandpa?
No, that's Scott Disick, 30, looking decades older, after disguising himself as an old man to attend the Kardashian family charity yard sale in Woodland Hills, Calif., on Sunday.
Wielding a walker while sporting a fedora, sunglasses, cardigan and a beard even ZZ Top would admire, the reality star and boyfriend of Kourtney Kardashian
looked intent on having a day filled with fun and laughter following the recent death
of his mother, Bonnie, 63.
"Grew the beard out for winter," he joked in the caption of an Instagram photo
The charity yard sale included personal items from Kim Kardashian
and family members, who matched proceeds from the sale to benefit the charities No Kid Hungry
and Greater Los Angeles Fisher House Foundation