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KIRSTEN DUNST is in rehab, sources tell ET.

A source inside Cirque Lodge clinic in Utah confirms that the 'Spider-Man' star checked into the treatment facility this week.

She reportedly broke down in tears when she checked in.

Her spokesperson could not be reached for comment.

The Cirque Lodge is where LINDSAY LOHAN underwent a two-month program last year, and where EVA MENDES recently sought treatment for depression.