What year is it again?!

Lindsay Lohan turns 31-years-old this weekend, and apparently she's feeling nostalgic, because she just asked old party pals Paris Hilton and Britney Spears to come to her birthday! Even weirder than that? She also invited Beyonce!

"#nicegirls @britneyspears @parishilton come to #mykonos for my birthday this weekend @Beyonce you too," she tweeted.

The trio haven't spent much time together since they made headlines in 2006 for running around Hollywood clubs together, and a lot has changed since then.

Brit Brit suffered her mental breakdown and proceeded to clean up her act, and P-Hilty has embarked on her DJ career and is happily settled with boyfriend Chris Zylka. After a few stints in the slammer, Lilo fled to Europe to live life away from the prying eyes of the paparazzi, but she's clearly missing the good ol' days!

The rehabbed redhead has obviously forgiven the heiress for that infamous "Firecrotch" video!