The body of a Columbia University student who vanished last month was found floating in the Hudson River Sunday, cops said.

Jiwon Lee, 29, a fourth-year dental student, was last seen in her Upper West Side apartment on April 1.

Her cellphone was tracked to the George Washington Bridge, prompting speculation she had jumped.

The medical examiner will determine the cause of death.

Her brother, Matt Lee, 25, had raised $87,414 in donations to assist in the search of his sister.