Surprise Grandma, there's a new baby tomorrow!
Couple Katie and Tannin Pease had two miscarriages before, so they wanted to be very sure before telling anyone that they were expecting their third child.
There's no time more sure than waiting nine months - especially to the unsuspecting grandmother.
Being able to conceal the growing baby bump by not living in the same city made it much easier - but when the grandparents came to visit, there was no more hiding the secret.
In an even better surprise, grandma found out the baby was due to arrive on her birthday the next day.
Watch her adorable reaction in the video above.