Brad Pitt and Angelina Jolie went on a low-key birthday eat-out celebration for their twins, Knox and Vivienne who turns eight this week.

A source said that the A-list couple went inside The Griddle Café in West Hollywood on Tuesday this week among with other diners to enjoy a tasty meal.

Brad goes incognito by wearing beige shirt, a hat and brown shades while his wife dons herself with a simple black dress matched with a cardigan and a pair of dark shades to match her attire.

An eyewitness who saw the A-list couple dining in the restaurant said that they are enjoying a laid back moment and "looked like a family eating breakfast... They were just eating and having a good time."

So what did the celebrity couple ordered for Knox and Vivienne's birthday? Another source said that they enjoyed the grill's desserts: Oreo and honey and cinnamon pancakes.

"They were super nice and friendly. Brad and Angelina were super low-key ... They were super chill," another insider said.

Brangelina's efforts to remain low-key did not last that long though in the entire night as some diners in the restaurant posted about the moment on social media.

"Holy fuck I got a picture of Brad Pitt and Angelina Jolie at a restaurant I was eating at," a netizen posted on Instagram as he snap a picture of Brad in another table.

The family outing came amidst divorce rumors for Brad Pitt and Angelina Jolie. For months now, the 52-year old actor has been surrounded with cheating rumors with his Allied co-star Marion Cotillard. Also, a possible reunion for the actor and his ex-wife, Jennifer Aniston has also been talked about as the ex-couple were rumored to have a brief reunion when Brad consoled Jen after her mother's death.

Despite rumors, the couple has not talked about their status in media conferences and interviews.

Meanwhile, Brad Pitt is set to work with Ben Stiller this year under Pitt's Plan B Entertainment. He will be producing the movie project with Sidney Kimmel Entertainment and David Bernad.

Angelina Jolie, on the other hand, will reprise her role for Disney's upcoming movie, Maleficent 2.