Nina Agdal is spending her final days of pregnancy in the buff ... rocking her birthday suit for a recent maternity photoshoot -- and the camera guy was none other than papa-to-be Logan Paul!!
The engaged couple documented their special getaway in Millbrook, New York before becoming parents ... where they spent quality time out on the lake and experienced all the little village had to offer.
At one point in the trip, the Sports Illustrated Swimsuit model got naked and propped herself up on a rock to display her growing baby bump for a few pics .