Celine Dion's proving she can still rock by jamming out to Bon Jovi at a Boston Bruins game ... and the heartwarming video also makes it clear she's not letting her health challenges stop her from living life to the max.
Check out the clip -- Celine didn't hold back as she started singing along to the rock band's classic "Livin' on a Prayer" Thursday night at the Bruins game against the NY Rangers ... a rare public appearance amid her ongoing Stiff-Person Syndrome battle.