Nicky Hilton is going to have one fancy baby!

In keeping with Nicky's lavish lifestyle, the mom-to-be celebrated the upcoming birth of her daughter with a swanky baby shower, held at the Hotel Bel-Air and co-hosted by sister Paris Hilton on Friday May 13 in Los Angeles' ritzy Bel Air neighborhood. And of course, the family Instagramed the whole thing!

The 32-year-old, who married James Rothschild at Kensington Palace in 2015, was surrounded by family and friends to celebrate the imminent arrival of her first child. For the baby bash, Nicky opted for a summery white off-the-shoulder minidress by Self-Portrait, which she paired with simple suede heels. Paris Hilton went for an equally light and flirty ensemble, a champagne colored lace romper.

Amazing day at my sister @NickyHilton's #BabyShower with my beautiful family. 👶🏼 #ItsAGirl 💖

A photo posted by Paris Hilton (@parishilton) on

The sex of Nicky's firstborn is no secret after Paris accidentally spilled that her sister was having a little girl during an interview with Us Weekly earlier in the week. Oops!

At the party, Nicky posed with a gaggle of gorgeous gals -- all of whom appear to be their cousins! Kim Richards' daughters Brooke Wiederhorn (who is also pregnant) and Whitney Davis were there, as well as Kyle Richards' four daughters Alexia and Portia Umansky, Farrah Aldjufrie, and Sophia. Other guests that attended the garden party were La Toya Jackson and aunt Kim Richards.

Baby shower crew👶🏼🍼👭👭👭👭

A photo posted by Nicky Rothschild (@nickyhilton) on

Party guests were given glasses of champagne, as well as pink lemonade in baby bottles, which were handed to them on silver platters. Oh the luxurious life of a celebutante!

The lookalike sisters made it a point to pose with the whimsical non-alcoholic beverages. We're pretty happy to see that that despite being single Paris looks like she's thrilled to be an aunt -- and couldn't be happier for her baby sister, whose baby girl is due in early July.

Cheers 🍼👯🍼 #NickysBabyShower 💕👶🏼💕

A photo posted by Paris Hilton (@parishilton) on

The only man who was at the event was Nicky's dad, Rick, who seemed to enjoy documenting his daughter and soon-to-be granddaughter's day.

Nicky's adoring dad posted a video of the scene, where he is overheard saying, "Look how pretty this is," along with the caption, "Nicky's baby shower." Clearly Rick's excited to be a Grandpa!

Nickys baby shower

A video posted by Rick Hilton (@rickhilton7) on

As for the party's decor, there was pastel pink all over the place — pink balloons, pink flowers, pink bows, pink cake that said, "Congratulations Nicky and James." Next to the gift table was a painting of Nicky when she herself was a baby.

Even mom Kathy Hilton got to bring something borrowed to the table — literally. Nicky used some of there mother's vintage vases to add some flair to the party's tablescapes.

Mom's vintage vase collection is stronggg 💐🌸🌼🌷

A photo posted by Nicky Rothschild (@nickyhilton) on

On May 9, Nicky told People mag that she's been busy getting ready for the baby's arrival. "I'm feeling great, really good. I'm doing the nursery right now," said the socialite.

When you get married at Kensington Palace a garden party at the Bel-Air hotel seems pretty fitting if you ask us!