Lady Gaga Center of Attention At Weinstein Pre-Oscar Bash

2/28/2016 7:18 AM PST BY TMZ STAFF

0228-lady-gaga-taylor-kinney-lana-del-rey-oscar-party-SPLASH-01Lady Gaga and bf Taylor Kinney hobnobbed it with Lana Del Rey at a swanky pre-Oscar party.

Gaga -- who had performed in WeHo with Elton John hours earlier -- rubbed elbows at Harvey Weinstein's big bash in Bev Hills at the Montage hotel.

It was a fancy shindig ... black tie dinner and all.