Last week, 24-year-old Tania Perez-Gutierrez from Houston, Texas, revealed she was pregnant to her husband, Ronald Gutierrez.
Perez-Gutierrez covered up her positive pregnancy test results alongside a photo of the ultrasound on a bed and asked Gutierrez to come into the room.
Perez-Gutierrez filmed her husband's adorable reaction as he discovered the surprise.
Her sister, 18-year-old Cristina Perez, uploaded the video to Twitter where it has been retweeted more than 6,000 times. She told BuzzFeed News she was really happy to see her brother-in-law react like that.
Perez said: "I'm away from home because of school and when my sister sent the video it filled my body with goosebumps."
She said her sister called her beforehand to brainstorm different ways of telling her husband.
Perez said: "She wanted him to know right away so she decided to go to Walmart and to buy a baby toy and put the ultrasound pictures inside."