If we're talking Spice Girls, then I'd suggest either Posh Spice or Sporty Spice, they at least have brunette hair.
A blonde Moneypenny? Actually, Eon already had one, with Caroline Bliss during the Dalton era.
"Anytime you'd like to stop by and listen to my Barry Manilow collection...."
--Caroline Bliss as Miss Moneypenny, TLD--