We remember a time when Caitlyn Jenner was too bashful to walk around in a bathing suit, but now the reality star is stripping down to nothing to be on the cover of Sports Illustrated magazine.

In celebration of the 40th anniversary of Jenner's gold medal decathlon win at the 1976 Montreal Olympic Games, she's taking it all off in a very revealing photo shoot, reports US Weekly.

Take that Kim Kardashian!

The mag's source says that the 66-year-old star will be wearing, "nothing but an American flag and her Olympic medal."

GAAAAH!

But these isn't the first time that the winning moment has been referenced in a sexy way. On the first season of Keeping Up With The Kardashians, ex Kris Jenner got freaky when she posed in the buff wearing only a flag and her then-husband's Olympic medal.

My how the tables have turned ...

E!/Keeping Up WIth The Kardashians