Kourtney Kardashian swimsuit ad: Where's the bump?

In a new ad for Sears' Kardashian Kollection line of bikinis sisters Kim, Khloe and Kourtney Kardashian model their signature line. But some critics are convinced that Kourtney -- who was three months pregnant at the time -- had her baby bump Photoshopped out of the picture.

For proof, at least one blog is citing a paparazzi photo of Kourtney taken around the same time of the photo shoot in late January. And, in the paparazzi shot she does indeed have a pronounced bump.

What do you think? Was the bump pared down for the ad or is it possible that Kourtney -- who was approximately 3 months pregnant at the time, which isn't that far along -- just wasn't showing all that much and the different angles resulted in drastically different pictures?