How long until she's back in rehab???

We say three months. Or less!

Lindsay Lohan has had many slips of sobriety lately. And her return to the pAArty girl circuit is not going to help keep her clean and sober.

The recovering addict is back in LA and on Friday night she went clubbing. But, even worse, after that, she went to an after-hours house party. That's where THE REAL TROUBLE happens.

Now that Britney's in the hospital, this is Lindsay's chance to reclaim the Hollywood Trainwreck title.

And she's not gonna let that opportunity escape!

[Image via WENN.]