Beyonce -- Lunch Date ... With a Side of Boob

Beyonce was bouncing all over L.A. ... because her tatas went commando while house hunting with Jay Z.

Shopping for a new home can be liberating -- and it certainly was for Bey's girls ... which got some freedom and sunshine during a lunch break at Gracias Madre in West Hollywood.

As we've reported ... Jay & Beyonce have spent several months searching for the perfect L.A. house to purchase and make their West Coast HQ.

Just a feeling, but something's gonna open up for them soon.