Mother day sticker application for WhatsApp. WAStickerApps supported. Mother's Day is a holiday that is celebrated on the second Sunday of May every year. It started in the United States. The holiday was founded in 1908 by Anna Jarvis. Mother's Day was first made to celebrate a person's own mother. Now it is made to celebrate all mothers and motherhood in general. It is celebrated at different times in different countries. In the United States of America, it is the second Sunday in May. Childre