Justin Bieber: 'I Finished High School with a 4.0 GPA'

Nerd alert!

During a sit-down with Martha Stewart for the August issue of Interview magazine, Justin Bieber says he hit the books hard growing up.

Martha Stewart Honors Her Late Mother with Center for Living at N.Y.C. Hospital

When Martha Stewart’s mother, Martha Kostyra, passed away at the age of 93, the lifestyle guru was inspired to do something to ensure that everyone would be able to age as gracefully as she did.

These Are the 2015 James Beard Restaurant and Chef Award Winners

QUIZ: Who's Your Secret Celeb Spirit Mom?

While cases of babies being switched at birth are very, very rare – and usually remain unknown – it still happens. This is what we tell ourselves when our own mothers insist we aren’t secretly related to Beyoncé.

If you, too, have ever suspected that your mom isn’t your real mom, take this quiz to discover the identity of your celebrity (spirit) mom. We recommend sharing your results except maybe not with your mom because that would make Mother’s Day kind of weird.

Watch Martha Stewart Give a Tour of Her New N.Y.C. Café (Video)

You better believe that Martha Stewart’s baristas know how to brew a solid cup of coffee.

The Internet Reacts to Martha Stewart's Raunchy Justin Bieber Roast Jokes

Kevin Hart wasn’t wrong when he described Martha Stewart as having “more street cred than Ludacris and Snoop Dogg combined.”

The 9 Definitive Moments of the Justin Bieber Roast, as Told by GIFs

Wait Until You Read What Martha Stewart Said to Justin Bieber at His Comedy Central Roast