Ryan Lochte Parties It Up in London — Breaststroke, Anyone?

Exclusive Details 0806_ryan_lochte_PCNNothing says party time like a pair of boobs in your face — which is exactly how 11-time Olympic medalist Ryan Lochte celebrated in London last night.

According to sources, Lochte — along with American teammates Nathan Adrian, Cullen Jones, and Matt Grevers — hit up Chinawhite nightclub in the Big Smoke around 11PM … and left around 3:30AM.

We”re told they drank gold bottles of champagne all night — obviously — and even ordered some Patron and Grey Goose for good measure.

But they didn”t leave empty-handed — they piled into a cab with several, very excited females … one of whom sat on Lochte”s lap, placing her fun bags a mere nuzzling distance away from his face.

Meanwhile, Michael Phelps was partying a few miles away — with his medals.

… How about that Mars landing