The ornamental design for a babybottle prop, as shown.
FIG. 1 is a perspective view of a baby bottle prop, showing my new design,
the broken line showing of the baby bottle is for illustrative purposes
only and forms no part of the claimed design;
FIG. 2 is a side elevational view thereof, the opposite side being
identical thereto; and
FIG. 3 is an end elevational view thereof, the opposite end being identical
thereto.
The bottom of the baby bottle prop is substantially plain and unornamented.