WATCH: David Muir shares heartwarming moment brother kisses newborn sister for first time

Colorado mom Shelby Wold, captured the moment her two-year-old kissed his newborn sister for the first time, but she never expected the reaction her daughter had.

​Colorado mom Shelby Wold, captured the moment her two-year-old kissed his newborn sister for the first time, but she never expected the reaction her daughter had.  WNT Colorado mom Shelby Wold, captured the moment her two-year-old kissed his newborn sister for the first time, but she never expected the reaction her daughter had.