In a September 28, 2007 article HERE, 만삭 was used to describe the figure of a pregnant Christina Aguilar (크리스티나 아길레라 만삭 몸매 "내 몸에 키스" 화제!!); however, the article said that the baby was not due until December, which means that Ms. Aquilar was not yet in her last month of pregnancy. The writer of the article misused the word 만삭.
Here is the picture that was posted with the article: