Beyonce & Kelly Rowland -- Go Artwalking ... No Picasso, Baby

Beyonce and Kelly Rowland were just two normies taking in the arts Tuesday -- sans the A-list treatment -- at UCLA's Hammer Museum.

Witnesses say they came with Bey's mom Tina and just like everyone else -- walked right on through the general entrance and cruised the exhibits for 2 hours with regular folk ... NO special tour guide. They stepped out of civilian mode just once, to take a pic with the museum's curator.

Bey and Kelly weren't there to see Picassos or Van Goghs .. and instead hit up two contrasting exhibits by emerging artists Frances Stark and Njideka Akunyili Crosby.

Bey's said in the past her music is often inspired by art ... so it could mean new music is on the way, or she's just shopping for wall hangings.