EXCLUSIVE PHOTOS: In This Issue — Meet Samantha Harris' Baby Girl!

In Samantha Harris' first interview since giving birth to her second child, Hilary Madison Hess, on Jan. 19 — only in this week's issue of OK! — she was bursting with pride. "This is so much fun. When you have one child that you love so much, you wonder how you could possibly love another one as much as the first."

"Now I know: I think you grow another heart when you have another child," she tells OK!. (She and husband Michael Hess had their first daughter, Josselyn Sydney, in 2007.)

But Samantha didn't even expect a girl!

"It's so funny because during the whole pregnancy I didn't know if it was a girl or a boy until the final two or three weeks, so I was very shocked when Hillary came out — I thought for sure it was going to be Zachary," Samantha laughs.

FOR MORE PICS OF SAMANTHA AND BABY HILARY, PLUS HER EXCLUSIVE INTERVIEW, PICK UP THE NEW ISSUE OF OK! — ON SALE EVERYWHERE NOW!