Soooo many people showed up to Gwyneth Paltrow and Brad Falchuk's engagement party and they were soooo dressed up that it's honestly making us wondering ... did they actually get married at this party?

It'd be totally Gwyneth's style do consciously couple with her fiance in a really non-traditional way, in a party atmosphere, surrounded by friends and family, at the Los Angeles Theatre in downtown LA and NOT in a church or some wild meadow or something. But if her friends' Instagrams are any indicator, it was just a massive engagement party blowout, thrown my the couple's mutual pal, Glee creator/director/producer Ryan Murphy.

The guest list looked like a who's-who of Hollywood -- well, who's who of the over 40 set ... all the younger people are at Coachella and couldn't give a rat's a** about Gwen and Brad. So anyway, you had two adorable pregnant ladies -- Kate Hudson and Miranda Kerr; also the usually elusive Cameron Diaz and Benji Madden, newly-single Jennifer Aniston, Demi Moore with a much younger boy toy, Chelsea Handler, Reese Witherspoon, Steven Spielberg and wife Kate Capshaw, Gwen's mom Blythe Danner, the rarely-seen Julia Roberts and Danny Moder, and SO many more.

Gwyneth just returned from a girls' weekend in Cabo San Lucas, Mexico where she celebrated her "hen weekend" (aka bachelorette). The actress was tanned and lovely in a burgundy ruffled floor-length gown with Brad in a traditional tux.

Check the video and our HUGE gallery to see all the glitz and glamour! Wonder when the even BIGGER day will be that these two tie the knot -- it'll be hard to top this party but we bet they will!