Tyga: Hanging with Look-alike But Still with Kylie

The Kylie Jenner look-alike who was spotted with Tyga this week has been in the picture for a couple months now ... TMZ has learned.

Her name is Val Mercado -- she's a 23-year-old model and aspiring singer -- and our Tyga sources tell us she's been very tight with him since shortly after his mini breakup from Kylie.

We're told they even hung out in Paris back in December when Tyga was there for a gig.

As for whether it's romantic -- we're told Tyga's interested in her ... for her music, and that's what he's told Kylie.

Although we haven't seen Kylie and Tyga together in a long time -- we're told they are still together, but as we reported ... they're focusing on their individual careers.