Happy Birthday, Lindsay Lohan!

Last year, Linday Lohan ended up canceling her 21st birthday bash at Pure nightclub in Las Vegas, after checking herself into the Promises Treatment Center in Malibu about a month prior to the scheduled festivities.

Today, LiLo turns 22, and though she had been looking for backers to finance a planned Moroccan-themed soiree, turns out her big night will be a private affair.

E! Online reports the happy-in-love Linds will clasp the hand of gal-pal Samantha Ronson and take center stage at Teddy’s in the Hollywood Roosevelt Hotel. Sam will be off the clock, though, as DJ AM will be spinning for the night.

If you’re thinking of buzzing by to catch the action, forget it: “It’s gonna be on lockdown,” a source says.

But whatever, let the woman have her party. Lindsay’s got a real job, has distanced herself from her crazy family and is actually doing better than most people would have predicted.

Someone get this woman a well-earned gift certificate to the tanning salon!