According to her sister Haylie, Hilary Duff is very relaxed about her upcoming wedding.
From People magazine:
"She's really relaxed and wants something comfortable and great, she's just so excited to be engaged. We've started talking about the wedding stuff, but she's still just really happy in this sort of phase. It'll be a while, but it's fun to talk about it and think about it. One of my other best friends got married and was a complete bridezilla, so I'm not getting the signs from Hilary that that's the case."
It's good to see that Hilary is relaxed. I wouldn't think she would be the "bridezilla" type.
Source: People.