Rihanna He's Got a Leg Up on You!

7/5/2015 7:00 AM PDT

Rihanna was in top form leaving a 4th of July party Saturday ... with some dude that doesn't look as excited as he clearly should.

RiRi was hanging out at Nobu in Maibu for awhile ... then split.

Technically it's not her holiday, but who's not gonna invite her?