September 8, 2015 10:09 AM EDT

It’s been a busy summer for Maisie Williams: Just a week after accepting a Guinness World Record on behalf of Game of Thrones, she hit one million followers on Twitter. To celebrate, the actress — already known for her Vines — launched a YouTube channel, kicking off her first episode of “Random Moments of Madness with Maisie Williams” with a Q&A.

Joined in a special appearance by one of her Game of Thrones costars, Williams fielded questions on everything from how fame changed her friendships to which TV event she never misses (hint: 30 Rock’s Tracy Jordan would be proud). Check out the video above to hear the actress share embarrassing stories, childhood memories, and a moment on the show that made her cry. (But if you’re not caught up, beware of spoilers.)

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