Brad Pitt and Angelina Jolie Take Their Twins Out For Birthday Breakfast in West Hollywood

The star couple treated their 8-year-olds, Knox and Vivienne, to a b-day bite at The Griddle Cafe on Tuesday.

Brad Pitt and Angelina Jolie's twins, Vivienne and Knox, turned 8 on Tuesday, and the superstar parents celebrated by treating their adorable tots to a tasty meal.

Pitt and Jolie proved the old adage "celebs are just like us" when they took their twins to The Griddle Café in West Hollywood for their special day.

WATCH: Brad Pitt and Angelina Jolie Are Making Show Biz a 'Family Affair'

Pitt, 52, rocked a white t-shirt and a beige, short-brimmed trilby while Jolie, 41, donned a black top under a light cardigan, and wore her hair down. Both stars wore dark shades.

Despite efforts to remain inconspicuous, it wasn't long before their fellow patrons took notice of the Oscar-winning couple.

WATCH: Angelina Jolie Says Her Six Kids Are All Learning Different Languages

While many celebs have earned reputations for diva-like behavior, these proud parents have always been very down to earth when it comes to raising their family. An eyewitness tells ET that they just "looked like a family eating breakfast… They were just eating and having a good time."

Pitt and Jolie, who welcomed Knox and Vivienne on July 12, 2008, share four other kids as well, including their 14-year-old son Maddox, 12-year-old son Pax, 11-year-old daughter Zahara and 10-year-old daughter Shiloh.

For more of the celebrity parents' super adorable moments, check out the video below.