The MGM Grand in Vegas has launched an internal investigation into video footage showing Whitney Houston's underage daughter Bobbi Kristina gambling at its casino this weekend.
TMZ posted the video this morning ... showing 19-year-old Bobbi hitting the slots Saturday night with her 22-year-old boyfriend. Bobbi was in town to attend the Billboard Music Awards on Sunday.
A rep for the MGM tells TMZ, it is now looking into the incident.
The Nevada Gaming Commission has also launched its own investigation into the footage.
Underage gambling is a misdemeanor in Nevada, punishable by up to 6 months in county jail or $1,000 fine. The MGM Grand could be subject to an even heftier fine.
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