A group of students at the University of Houston got the surprise of a lifetime earlier this week when Beyonce randomly showed up while her mother Tina Knowles was being honored for her accomplishments as a mother, businesswoman and philanthropist.

As a proud daughter, Beyonce sat in the audience while her mom was being interviewed for the school’s Women’s Studies and Friends of Women’s Studies Living Archive Program.

Beyonce’s visit was made public after a student tweeted about her surprise appearance, and before the interview was over, hundreds of students began to crowd into the library and begin to chant “Beyonce! Beyonce!”

Houston Chronicle reporter Joy Sewing, who interviewed Tina, wrote:

Beyonce, who is pregnant with her first child, was a bit bothered by the chaos since it was her mother’s big day. But afterwards the singer, wearing 5-inch heels, made a quick stop in the lobby to wave to the students: “Wow, this is crazy how fast that happens,” she said to me. “Just one tweet.”

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