Lindsay Lohan Accuser -- IT'S GLORIA ALLRED TIME!!

3:20 PM PT -- It's on bitches ... Gloria tells TMZ, she is now OFFICIALLY representing Tiffany Mitchell.

You knew it was just a matter of time ... but Lindsay Lohan's accuser has already hooked up with Gloria Allred -- who smells a lawsuit?!??

It's unclear if Tiffany Mitchell has officially hired Allred as her attorney ... but the two were spotted together on the streets of New York City moments ago ... sporting a pair of million dollar smiles.

We broke the story ... Mitchell claims Lohan slugged her in the face at Avenue nightclub Wednesday night.