Bobbi Kristina -- Laid to Rest (PHOTO)

Bobbi Kristina's family gathered Monday in Westfield, NJ for the burial at Fairview Cemetery ... in the plot right next to her mom, Whitney Houston.

Another family gathering means another opportunity for drama ... after Bobbi's aunt, Leolah Brown, was booted from Saturday's funeral after lashing out verbally at Pat Houston.

As TMZ first reported, someone snapped a photo of Bobbi Kristina -- lying in her casket -- during Friday's viewing ... which was now been sold to a media outlet.