02/20/2012 at 03:45 PM EST
Pregnancy seems to be flying for Molly Sims.
The model, 38 – who announced last month
she's expecting with new hubby
Scott Stuber – is in shock that she's already five months along.
"It's hard for even me to believe," she wrote Monday on MollySims.com
, accompanied by a link to her recently updated Bump Watch album with a photo of her growing tummy. Sims was just in New York for Fall 2012 Mercedes-Benz Fashion Week and attended the Diane Von Furstenberg.
Adds the Project Accessory
host, "the baby just started kicking and at this point it's only a matter of weeks until life as I know it is going to completely change – and I can't wait!"
– Dahvi Shira