DeSean Jackson -- BOTTLES & MODELS ... During Crazy Miami Rager

DeSean Jackson got TURNT ALL THE WAY UP during his wild weekend in Miami -- droppin' cash on expensive bottles and partying with beautiful women ... and TMZ Sports has the pics.

The newest Washington Redskins wide receiver hit up Dream Nightclub this weekend and RAGED -- buyin' up bottles of Moet & Chandon Nectar Imperial Champagne and celebrating like a champ.

Check out the pics -- he's SURROUNDED by hot chicks.

Our sources tell us D-JAX dropped more than $7k that night ... the perfect way to celebrate a new $24 MILLION contract.