Mom of three JULIA ROBERTS – wearing sweats, no makeup and hair in a bun – drove up to Sprinkles Cupcakes in BevHills, raced inside and ordered three dozen cupcakes for a PTA meeting, then handed over her credit card…and was stunned when the young female clerk asked for ID.

“You don’t know who I am?” spluttered the star.

Said the lass: “Sorry, it’s store policy to ask for ID.”

Exasperated, Julia ran back to her car, grabbed her wallet and ran back in with her ID.

Perusing it, the clerk said: “It doesn’t match the name on the credit card – ‘DANNY MODER.’ ”

Snapped Julia: “That’s my husband!”

When the clerk asked if she had a credit card in her own name, agitated Julia fished in her sweats, dug out crumpled cash, paid the bill – and split in an obvious huff!