'Glee' -- Female Stars Addicted to Buying Los Angeles Area Real Estate

The "Glee" chicks are getting way too much dough to sing other people's hits songs ... 'cause 3 of 'em bought sweet new pads in the last MONTH alone!

Naya Rivera -- aka the hispanic one -- is now in the Hills of Beverly after scooping up a 3300 sq. ft. home listed at $1.575 million. 4-bedrooms, 3.5-baths, indoor sauna AND a pool! Baller.

Co-star Jenna Ushkowitz -- aka the asian one -- went condo style ... purchasing a 1-bedroom in Hollywood. Listing price was a more frugal $630k, but here's the kicker -- $1178 monthly for HOA dues. Dayuum, Jenna!

And as TMZ first reported, Lea Michele -- aka the diva one -- is setting up shop in an oddly unpretentious little $1.4 million L.A. area home.

So, we gotta ask ...