Stars in their best supporting role as bridesmaids

Hailey Baldwin was the maid of honor for her sister Alaia on Saturday, September 2. The 20-year-old model posed with her mom Kennya and cousin Ireland, who also served as a bridesmaid at the New York affair.Photo: Instagram/@irelandbasingerbaldwin

Lauren Conrad not only was a bridesmaid for her friend Cassandra Herschenfeld's wedding, she also designed the 13 dresses. Each Paper Crown dress had a slightly different look and as event planner Mindy Weiss wrote, "A beautiful wedding party wearing @papercrown all the different styles were perfect for each girl." Lauren stood alongside her longtime friend just six weeks after giving birth to her and William Tell's son Liam. The former Hills star and the bride have a particularly special connection: Cassandra planned Lauren’s wedding three years ago! But this wasn’t the only friendship reunion that happened under the Californian sun. Lauren’s best friend and Laguna Beach/Hills co-star Lo Bosworth was also part of the wedding party.Photo: Instagram/@mindyweiss via @amyandstuart

Tracee Ellis Ross had her sisters with her as they celebrated their brother Ross Naess wed longtime girlfriend Kimberly Ryan at Rancho Dos Pueblos in Goleta, California on June 10. The Blackish star couldn't contain her excitement alongside Rhonda Ross, Leona Naess and Katinka Naess. Photo: Instagram/@traceeellisross

Ashlee Simpson Ross along with her sisters-in-law Leona and Katinka Naess wore personalized jean jackets during Ross Naess' bohemian-inspired nuptials.Photo: Instagram/@leonanaess

Rachel Bilson was a blushing bridesmaid for Hart of Dixie set costumer Gelareh Khalioun's wedding at the Hummingbird Nest in Susana, California. Hayden Christensen's longtime love captioned the photo, "My #HOD girls @wipeyoownass @kachtmeyer celebrating @gegelspot @elijah_medge." The mom-of-one also jokingly added #alwaysabridesmaid." Photo: Instagram/@rachelbilson

Gossip Girl alum Jessica Szohr (second from the right) dazzled in a seafoam green, sequin bridesmaid dress at her sister Megan Burg's wedding. Sharing a photo from the big day, the actress wrote, "2016 was awesome and flew by... one beautiful memory that sticks out to me is my gorgeous sister @megnoliaa and now brother in law Tyler's wedding in Jamaica. I can't explain the emotions and laughs that occurred on this trip! Love you both... let's make 2017 another great year;)." Photo: Megan Yanz via Instagram/@jessicaszohr

Bride-to-be Miranda Kerr, third from left, made a beautiful bridesmaid at her brother Matty Kerr's wedding to Jimmy Wright in Hunter Valley, Australia. The model stunned wearing a white dress and flower crown for the occasion, which was attended by her fiancé, Snapchat CEO Evan Spiegel.Photo: Instagram/@theresekerr

Maid of honor crossing! Donald Trump's daughter, Tiffany Trump took on an important role serving as the MOH at her maternal aunt Danielle Haynes' wedding in Georgia. Tiffany shared a photo of her feminine wedding ensemble writing, "Saturday down South #proudmaidofhonor." Photo: Instagram/@tiffanytrump

With her best friend Abigal Anderson's engagement, it looks like Taylor Swift might be reprising her dutiful role as a maid of honor. Until then, take a look at other stars including Eva Longoria and Lady Gaga who have served as bridesmaids in their own friend's weddings. Photo: Instagram/@taylorswift

Amy Schumer was "proud to be a bmaid" at her friend Tara's wedding. The Inside Amy Schumer star wore a strapless dress for the occasion and was accompanied by her boyfriend Ben Hanisch.Photo: Instagram/@amyschumer

Months before her 2015 wedding to Joe Manganiello, Sofia Vergara served as a sunny bridesmaid in her friends "Chi and Todd's" wedding, wearing a strapless, yellow dress.Photo: Instagram/@sofiavergara

It was a wedding outside of the city for Sarah Jessica Parker (third from the right). The actress beamed in a vibrant purple bridesmaid gown for her former Sex and the City assistant Melinda Relyea's wedding to Jamie Kearns in Greenwich, Connecticut back in 2014.Photo: Instagram/@colleen_oneill

Taylor Swift was a part of her childhood friend Britany Maack and Benjamin LaManna's love story, serving as the stunning maid of honor, wearing a custom blush Reem Acra gown.Photo: Instagram/@taylorswift

Rihanna work-ed it in a lilac Badgley Mischka Couture bridesmaids gown for her assistant Jennifer Rosales’ 2015 wedding in Honolulu, Hawaii. Photo: Instagram/@badgirlriri

Almost a year before wearing a Victoria Beckham designed number for her own wedding, Eva Longoria was a vision wearing a strapless seafoam green bridesmaid dress at her friend Alina Peralta's nuptials in Spain.Photo: Instagram/@evalongoria

Lady Gaga was a blushing bridesmaid for her best friend Bo O'Connor's 2013 wedding in Cabo San Lucas, Mexico. The Bad Romance singer toned down her style for the occasion wearing a pink halter-neck dress by Twobirds.Photo: Instagram/@LadyGaga

Jessica Simpson carried out her matron of honor duties alongside her daughter Maxwell Johnson for her sister Ashlee Simpson's 2014 wedding to Evan Ross.Photo: Instagram/@jessicasimpson

Emma Roberts was one stylish maid of honor at fashion designer Kara Smith's 2015 wedding to photographer Nick Walker. The actress stunned in an ivory slip dress by Elkin for the Californian nuptials.Photo: Instagram/@emmaroberts

Lena Dunham sparkled alongside her fellow bridesmaids at pal Audrey Gelman's nuptials in May 2016. The Girls star shared a photo of the wedding party's J.Crew ensembles writing, "What happens when @jcrew goddess Jenna Lyons lets a bunch of crazy bitches customize their skirts... here we go #gomezandmorticia." Photo: Instagram/@LenaDunham

Pippa Middleton famously served as Kate Middleton's maid of honor for her 2011 royal wedding to Prince William. The royal's little sister caught the attention of the world's media stepping out in a figure-hugging Alexander McQueen sheath dress.Photo: Pascal Le Segretain/Getty Images

Kelly Rowland and LaLa Anthony were just two of Ciara's eight bridesmaids (who wore black satin Michael Costello dresses) for the singer's fairytale wedding to Russell Wilson at the Peckforton Castle in Cheshire, England.Photo: Dennis Leupold via Instagram/@ciara

Actress Odette Annable (third from the left) joined Jessica Simpson (not pictured) as a bridesmaid for their friend Jennifer Everhart's Tahitian wedding.Photo: Instagram/@odetteannable