Fergie Covers Her Baby Bump With a Stevie Nicks Costume

Josh Duhamel's wife is either very pregnant, headed to a Fleetwood Mac themed party or both!

Does Stevie Nicks have a new maternity line?

Mom-to-be Fergie recently stepped out in a look better fit for a Fleetwood Mac-themed party than the red carpet. The blousy, black shirt-dress with flowing sheer sleeves is stolen straight off the cover of "Rumours" and we have a feeling the original rock gypsy would definitely wear those black, lace-up boots.

Maybe the mamma is just starting her baby's rock history lessons very, very early? In which case, who's next?!