Apparently Mildred "Patty" Baena knew the sex of the baby because the color scheme at the shower was blue.
Among the 15 guests at Patty's home ... Alicia, a cook who worked for Arnold and Maria. She's wearing gray sweatpants.
Among the gifts for Patty -- who was 8 months pregnant at the time -- a baby stroller.
We're told Arnold and Maria sent lots of gifts for the baby.
The boy -- now a young teen -- looks like the spitting image of Arnold.