David Bowie's 'Ashes to Ashes' Spacesuit Being Sold in $1.7 Million Auction

An out-of-this-world fit David Bowie rocked in a classic music vid is going up for auction ... alongside other unique props and costumes that are sewn into the fabric of music history.

A massive music memorabilia auction is set to go down in a couple of months, held by Propstore Auction ... and one of the major Tom highlights, if you will, is Bowie's spacesuit from his 1980 video for "Ashes to Ashes."

The ultra-rare suit is estimated to make up to $92K during the auction, but that number looks awfully small compared to the $1.7 million the entire auction is expected to earn.

Also going up on the block ... a custom silver sparkle Gibson Les Paul Florentine guitar used by Oasis' Noel Gallagher -- a sleek instrument that could go for $578K.

In the perfect timing department, Propstore will offer a Rihanna-worn top from her 2016 "Work" music video. TMZ just broke the story ... RiRi will be headlining the Super Bowl Halftime show in February.

And, for the army of Spice Girls fans, there will be a pair of signed boots Mel B wore during a tour.