A dad couldn't believe his eyes when he picked up his baby daughter to find her wearing a t-shirt revealing he is set to become a father again. The surprise came as even more of a shock for dad Chris Kellogg, 32, because he and his partner had previously spent five years trying to conceive before turning to IVF for their first child. When Chris first picked up his eight-month-old daughter Riley, he didn't notice the special message written across her black t-shirt. It was only when Chris' partner, Christine Phillips, 32, asked him to double-check the attire that he read the words "Big Sister" and everything clicked. A beaming Chris, 33, from Queen Creek, Arizona, let out a stunned expletive before heading over to Christine, who was capturing the moment on video. She presented him with a positive pregnancy test, certifying the surprise. The couple were extra thankful, Christine said, because of the troubles they had conceiving in the past. Before their eldest daughter, Sophia, 12, was born they had gone through five years of infertility struggles before turning to IVF. The latest pregnancy came as a complete shock, Christine said, and because they had not used IVF this time around, she was able to plan a surprise reveal for her partner.