A New Breed of Baby Surprise?

As knitters, many of you are familiar with Elizabeth Zimmerman's Baby Surprise Jacket. I started a new baby knit recently, and although this is not a baby surprise- the construction is so intriguing that it reminded of the famous knitted garment.

I'm not telling what it is- not now at least.  So give it your best shot- anyone have any guesses??  Maybe there's someone out there who's made this little garment (but there's only 13 projects listed on Ravelry... and that's as much of a hint as I'll give you!).