Are Gwyneth Paltrow and Brad Falchuk married?

Practically all of Hollywood turned up to Gwyneth Paltrow and Brad Falchuk’s black-tie engagement party Saturday night — which was rumored to be a secret wedding.

Paltrow, 45, was beaming when she arrived at the Los Angeles Theater in a floor-length maroon dress, fresh from a VIP bachelorette party in Mexico, which Page Six exclusively reported on.

Her producer beau, Falchuk, 47, arrived separately in a white tux.

The star-studded, 400-person bash was organized by Falchuk’s business partner, Ryan Murphy, who has worked with him on hit series like “Glee” and “American Horror Story.”

The black-tie dress code had some insiders buzzing that the event was actually going to be the couple’s nuptials, Page Six reported exclusively. It’s also been rumored they’ll tie the knot in the Hamptons later this year.

Paltrow’s mom, Blythe Danner, was spotted leaving Saturday’s shindig carrying a gray Monique Lhuillier dress bag, the Daily Mail reported. The A-list designer is known for her bridal looks and her dresses are celebrity favorites.

Paltrow’s rep did not immediately return a request for comment.

The venue’s marquee boasted sweet messages: “GP Loves BF” and “BF Loves GP.”

Stars in attendance included Cameron Diaz, who planned Paltrow’s bachelorette party, and other Hollywood A-listers Reese Witherspoon, Kate Hudson, Jennifer Aniston, Julia Roberts, Liv Tyler and Demi Moore.

Noticeably absent was Paltrow’s ex-husband, Coldplay rocker Chris Martin, whom she’s famously remained on “familial” terms with and with whom she has two children.

Since Paltrow and husband No.1 eloped, she’s said she’s treating this wedding as her first and pulling out the traditions.

“I’ve never had a wedding before so even though I’m 45, I sort of feel like a 21-year-old,” she told People after announcing her engagement in her own Goop magazine’s “Sex & Love” issue.

“It’s kind of fun to talk about with my girlfriends. They send me pictures of dresses — they’re as excited about it as I am,” she added.

Paltrow and Falchuk met when the actress guest-starred on “Glee” in 2010 and the pair have been dating since 2014, after her split.