Brooke Shields Renting Out Mansion with a Slice of 'Blue Lagoon'

The mansion Brooke Shields once rented out to Jennifer Garner and Ben Affleck ... is back on the market ... if you've got $35k to drop every month.

Shields is renting out 5,345 square feet of paradise in Pacific Palisades. The Swiss chalet-style crib features 5 bedrooms, 5.5 bathrooms and even a "Blue Lagoon" style pool.

Shields -- who spends most of her time in NYC -- reportedly rented out the property to neighbors Jen and Ben ... who only used it as a backup property while theirs underwent renovations.

#RichPeopleProblems