The 28-year-old actress announced the happy news on Instagram by sharing a picture of a bun in an oven with a sign that read, "XO, The Dorsey", reported Ace Showbiz.
She previously teased her fans on Twitter with the words, "First comes love... Then comes marriage... Then comes..."
She captioned the picture with a link to her personal website, where she officially shared the happy news.
"Surprise! We're having a baby! Ryan and I feel so blessed and can't wait to welcome the newest member of our family," she posted along with a throwback photo of Ryan and herself as children.