Pregnancy has never looked better than it  does on singer Fergie.

And the 38-year-old, who is expecting her  first child – a son – with husband Josh Duhamel in September, was clearly in the  mood to celebrate as she attended her rather unique baby shower in LA on  Sunday.

Joined by a bevy of celebrity pals –  including Kelly Osbourne, Adam Lambert, Molly Sims and Gabriel Aubry – as well  as her 40-year-old hubby at the SLS Hotel in Beverly Hills, the gay icon dubbed  the co-ed celebration her ‘gayby shower’.

Keeping mom: Fergie, who is expecting a baby boy in  September, tweeted  this cute snap as she celebrated her baby shower with  friends in LA on  Sunday

Her lovely baby bump: Guests were entertained by drag  burlesque performers during the afternoon’s festivities dubbed ‘Ferg’s Gayby  Shower’Thumbs up: Kelly appeared to be enjoying the drag show,  which featured a scantily-clad performer writhing around on a table

 

Baby swag: Molly Sims came armed with a huge bag of  gifts from upscale department store Barneys New York

 

Stylish attendees: Molly looked effortlessly chic in  printed monochrome pants and a simple vest, while Julianne Hough cut a  classically elegant figure in a pretty white prom dress

 

Pretty as a picture: Julianne appeared to be in high  spirits as she arrived at the star-studded baby shower

Signature Ferg-aritas and the star’s own  Ferguson wine range were offered to non-expecting attendees.

Teal and clear-coloured balloon animals were  made to keep the children entertained and  each left in good spirits with a bag of blue and white candy.

‘Woo! It’s my baby boy’s first party!’ the  over-the-moon star excitedly gushed as she took to the mic.

A baby shower to remember! Lance Bass and Michael  Turchin looked excited as they made their way into the party

Burly escort: Petite Kelly Osbourne was dwarfed by her  hulking companion as she arrived at the SLS Hotel

Dressed to impress: Kelly wore an all-black ensemble to  the black, white and blue-themed party, adding a pop of colour on her lips and  heels of her stilettos that matched her hair

Right on cue: Adam Lambert, who will join the cast of  Glee this season, arrived at the bash as the song Let’s Hear It For The Boy  began to play

 

Rocking out: Adam outshone his modestly-dressed female  friend in a wild animal-print shirt, black jacket, ripped jeans and funky  studded boots

 

 

Making an entrance: RuPaul Andre Charles, who is better  known as drag queen RuPaul, attended the bash dressed in a baby pink suit as a  guest rather than a performer

 

Celeb blogger Perez Hilton, real name Mario,  was thrilled to be a part of what he called ‘the most fabulous  event ever  thrown by the most fabulous mommy-to-be ever’.

The 35-year-old, who himself became a  first-time parent on February 16,  welcoming son Mario Armando Lavandeira III  into the world via surrogate, couldn’t wait to introduce his mini-me son to the  celebrity circuit.

‘Our little guy is already making the  celebrity party rounds!’ the proud papa revealed to readers on Perezhilton.com ahead of Sunday’s bash.

Baby’s first celeb party: Celeb blogger Perez Hilton  introduced his son, Mario Armando Lavandeira III, to the A-list lifestyle he has  become accustomed to

Never too young to network: New dad Perez arrived with a  bulging bag of gifts to celebrate pal Fergie’s impending  motherhood

 

Dapper duo: Perez, who dubbed the shower ‘the most  fabulous event ever thrown by the most fabulous mommy-to-be ever’, dressed in  smart colour-coordinated black and white outfits

 

‘Sunday’s finest’: Perez Hilton and his adorable baby  son Mario Armando Lavandeira III got their glad rags on for the event

 

Model appearance: Gabriel Aubry, the father of  Halle  Berry’s daughter, Nahla, arrived at the bash in jeans and a light  blue  shirt

 

Guest-of-honour Fergie posted a pic  from the  shower on Twitter, looking fabulous in a form-fitting,  colourful printed dress  and white pumps.

She held a cute accessory in the snap that  read, ‘Say my name’ – hinting that festivities included a guessing game of her  unborn son’s name.

‘It’s gayby shower day! He’s trying to talk!’  was the fun caption that accompanied the photo.

Special delivery! Fergie was treated to a huge,  intricately designed baby shower cake, which was delivered to her abode in the  middle of the party

Only the best will do! The incredible cake featured  lollipop and teddy bear designs crafted out on intricately-carved icing

Daddy duty: After running errands, Josh Duhamel rushed  back to the  couple’s Brentwood, California home to prepare for  the co-ed  celebration

Dutiful father-to-be: After a quick outfit change, Josh  cleared away his mountain bike before heading to the baby shower

Ready to party: Josh and Fergie were picked up from  their Brentwood home by a car service for the bash

Shady lady: The couple, who married in January 2009,  have said they can’t wait to welcome their first child, which Josh revealed last  week is a boy

Meanwhile, the star, who recently  petitioned  to officially change her name from Stacy Ann Ferguson to  Fergie Duhamel, isn’t  the only Ferguson expecting.

The blonde songstress happily retweeted her  excitement at younger sister Dana’s pregnancy news on July 24.

‘I am BEYOND excited my lil sis is pregs!!!!!  RT @DanaMFerg: 13 weeks! So excited 2 be a mommy!’

Gifts aplenty! Fergie’s plethora of pals came armed with  a series of baby presents, including a giant cuddly sheep

A very pampered tot: Fergie and Josh’s little one  already looks as though he is going to be one well looked after little  boy

Stylish and practical: One guest had gifted the little  one with an adorable cobalt blue baby carrier by Jeremy Scott, featuring a fun  fast food print

Double duty: Fergie was thrilled to announce that sister Dana is also expecting, with the singer set to become an aunt early in the New  Year

Read more: DailyMail