Just recently, including in comments here on this blog and in other places, the debate about this photo has rekindled. AGAIN. A common tactic has been to compare the photo to photos absolutely known to be taken at Sarah Palin's inauguration on January 19, 2007. Many people have stated categorically that the children - Piper in particular - look younger there, than in the "mystery" photo. And since the photo in question is obviously taken in the fall or early winter (no leaves on the trees) this means it must have been taken fall 2007. If that date is accurate, potentially Bristol Palin could already have been in the early stages of pregnancy.
One item that has been stated about this picture is that it was published in several places, and then after Sarah Palin's nomination as VP, the dates were changed. It is hard to keep up with all of these allegations though web pages have definitely been changed. I originally stated that I felt that the photo could not be conclusive because, last fall, at this link , the Anchorage Daily News had a reprint of an article. Several months ago, it contained this picture in which the Palin family is clearly wearing the same clothing as in the other shot:
I don't know why the story was changed and the picture removed but we have located this additional photo from the same shoot.
Todd's plaid shirt is clearly visible here and inside the house, the lighting is the same, as is Gov. Palin's sweater, hair, glasses and jacket.
This last photo allows us to date the entire shoot definitively to the fall of 2006. Why? Because Todd Palin is wearing a red Palin/Parnell campaign button. Upon enlargement, it is easy to see. And, unless one wants to go to ludicrous extremes (such as Todd was just so proud of this button he kept it on his jacket for a whole year) this dates the photo to at some point during the campaign, prior to the election. In spite of the "suspicious" date change on Anchorage Daily News, I believe that the date of 10/23/06 is likely for the shoot. (Or perhaps a day or two before... 10/23/06 is the day the ran the article initially, apparently.)
There are many compelling reasons to believe that Gov. Palin faked a pregnancy in spring of 2008 and at least some reasons still pointing to Bristol Palin being pregnant simultaneously.
The "green sweater" photograph of Bristol Palin was taken in the fall of 2006 and is not one of them.