Fashion mogul Elie Tahari has rented his over-the-top oceanfront Sagaponack estate for a mighty $800,000 — its full asking price — for the summer to a mystery tenant. This isn’t the first time it’s been rented.

Last year, as we reported, a hedge funder nabbed the spread, which asked $800,000 for July and August.

The stunning home is 4,500 square feet (which actually passes for cozy on the East End for a certain crowd).

Built in 1998, the pad at 135 Crestview Lane comes with three bedrooms and three bathrooms. It sits on 2½ acres, features a pool and boasts 250 feet of oceanfront land.

Inside, a private master suite looks to the Atlantic and sports a spa-like bathroom with a “room-sized” shower, a six-person “pool-like” tub and a private balcony overlooking the great room.

That latter space is decked out with a fireplace and 10-foot roll-up glass doors that lift up to bring the ocean views and sounds inside. Additional features include a sun deck with its own stairs to the beach.

There are two other suites for guests — one is oceanfront, with a private way to the beach, while the other has a four-person steam shower.

Tahari’s home, curated by designer Tom Flynn with midcentury details, also boasts a chef’s kitchen, a 12-person dining table and a charming outdoor entertaining pavilion.

The listing brokers were Sotheby’s International Realty’s Keith Green and Ann Ciardullo. The renter was repped by Douglas Elliman’s Matthew Breitenbach.