Lohan, who was 26 at the time, appeared on The Late Show with David Letterman, an American talk show, in 2013 to promote parody horror film Scary Movie 5.
However, she appeared to be blindsided when Letterman started asking her questions about rehab, which Lohan said wasn't part of the "pre-interview", which is where a member of staff runs the guest through a list of questions they're likely to be asked. "Aren’t you supposed to be in rehab?" Letterman asks the Mean Girls star in the clip, before adding: "How long will you be in rehab?" to which Lohan says: "Three months. "Letterman quickly fires back: "How many times have you been in rehab?"Lohan, who is clearly taken aback by the question, responds: "Several.
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