She gave birth to her first child - a boy named Liam - just six weeks ago.

But Lauren Conrad was more than happy to step-up to bridesmaid duties over the weekend - attending the nuptials of her friends, Cassandra Herschenfeld and Ben Katz, in California. https://twitter.com/DailyMailCeleb/status/899254212382531584 Also in the bridal party was Lo Bosworth, another star of The Hills - the show which catapulted Lauren to fame in the mid-2000s. With a total of five bridesmaid, their dresses were light grey and sleeveless and all had slight variations. The party - along with a gaggle of other girlfriends - had gotten ready together on Saturday morning, wearing matching floral dressing gowns for the occasion. The bride herself, known as Cassie to her friends, donned a simple gown with a stunning fitted bodice and an embroidered tulle skirt.

A post shared by Mindy Weiss (@mindyweiss) on Aug 19, 2017 at 8:47pm PDT

The Jewish celebration was held at the upmarket Ojai Valley Inn & Spa with the top of the chuppah being filled with hanging tulips for the outdoor afternoon ceremony.

A post shared by Dori Jones (@doriwrites) on Aug 19, 2017 at 6:21pm PDT

Afterwards, the guests remained outside as they sat down to personalised menu cards, the long tables being dressed with plenty of green foliage, chunky white candles, and rose-gold cutlery.

A post shared by Mindy Weiss (@mindyweiss) on Aug 19, 2017 at 8:42pm PDT

The newly married couple are based in New York and held their engagement party in the Westshore Grand hotel in Florida last November.

A post shared by Dori Jones (@doriwrites) on Aug 19, 2017 at 10:19pm PDT

Last month, Lauren had made Cassie and Ben a touching needlework creation. Entitled, The Katz Family Est, August 19 2017, it showed the bride- and groom-t0-be alongside their dog.

A post shared by Cassandra Herschenfeld (@cassandrabette) on Jul 19, 2017 at 12:28pm PDT

Recently, Lauren, 31, who has been married to William Tell, 37, since 2014, told People that she had multiple sizes of her bridesmaid dress fitted to accommodate her post-baby figure.

A post shared by Lo Bosworth (@lobosworth) on Aug 19, 2017 at 3:38pm PDT

"I’m in a wedding in a month and fortunately we’re doing the bridesmaid dresses so I can order several. I have no idea what my body is going to be, I don’t know what shape I’m going to be," she said.

https://twitter.com/jocrawl/status/899254189867520000

"I just made a person. It’s fine. And there are always things you can do to make yourself feel better. Spanx exist for a reason."