Heidi Montag shows off her bump in blue dress at her baby shower in LA

Heidi Montag showed off her baby bump in a form-fitting baby blue dress at her baby shower.

The mother-to-be, 36, celebrated her second child with husband Spencer Pratt at Hanks restaurant in California’s Pacific Palisades. She was joined by her closest friends, including her The Hills costar Jen Bunney Dumphy.

The reality TV show is expecting a second son in December.

Baby blue shades: Heidi Montag, 36, showed off her baby bump in form-fitting dress at her baby shower

The reality TV star showed off her baby bump silhouette in a powder blue off-the-shoulder midi dress with a sweetheart neckline.

The star comfortably wore a pair of gold-studded, white sneakers. She accessorized with a silver chain and two rings – her wedding ring and a blue gemstone.

For makeup and hair, Montag sported a smokey eye makeup look and styled her blonde locks in loose, flowing waves.

‘Best mom ever’: The former Hills star posed with an appropriately designed gift bag at her baby shower hosted by Caitlyn Crisp Icardo and Rachael McRoskey

The Hills alumna reported in an earlier Instagram post that her second baby is expected on December 1.

In a photo montage posted to her social media on Monday, the reality star smiled and thanked the women who celebrated with her.

She wrote, “So grateful for the love and support of these wonderful mamas. Thank you [Caitlyn Crisp Icardo and Rachael McRoskey] for throwing this beautiful and special litter. What a blessing. I love all you wonderful women.’

Mamas unite: Some of the reality star’s gal pals in attendance included Jen Bunney Dumphy, Brittany Rothenberg, Chanel Malin, Haley Skiba, Juliana Davis, Megan Fairbank, Chantal Oberman and Chelsea Kohan

The star already shares a son – Gunner, aged five – with husband Spencer Pratt, 39.

The couple confirmed in June that they would be expecting a second son and that their son Gunner would be a big brother.

In 2006, the now-parents had met at a nightclub. When Pratt was later cast on The Hills – the same show that Montag starred in – their relationship took off.

They will soon be a family of four: the star already shares a son – Gunner, aged five – with husband Spencer Pratt, 39

Viewers watched as the couple progressed in their relationship over the next six seasons.

The couple have been very candid in recent years about their desire to expand their family, but their struggle to do so.

In an exclusive interview, the reality TV personality told Us Weekly, “It’s been so nice to be with such a supportive, fun group of moms that I love. All the women who have been there for me during the struggle to conceive and celebrate this miracle baby.”

She added, “It couldn’t have been a more perfect celebration. I’m so excited to meet my little boy!’