We are heartbroken to report that Emma Greer DiBiase, a 16-year-old Vine star, passed away over the weekend. She was diagnosed with alveolar rhabdomyosarcoma in October 2013, and her doctors found two new tumors this January.

At the end of February, Emma's medical team told her that she had three weeks to three months to live. Since then, she spent her time in hospice care. Her last tweets updated fans about her condition:

Obviously, she was beloved by the Vine community, and a bunch of web celebs have honored Emma with sweet messages. Her boyfriend in particular wrote a heartbreaking post about everything she meant to him.

Our hearts go out to her friends and family. Click through the gallery to see their comments. Send your kind thoughts to Emma's loved ones below.

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