Two best friends become rivals when their respective weddings are accidentally booked for the same day.

San Francisco's premiere wedding planner, Mary Fiore is rescued from an accident by the man of her dreams, pediatrician Steve Edison, only to find he is the fiancé of her latest client. As Mary continues making their wedding arrangements, she and Steve are put into a string of uncomfortable situations that force them to face their mutual attraction.

While romancing Palmer, a much younger schoolteacher, plastic surgeon Danny Maccabee enlists his loyal assistant Katherine to pretend to be his soon to be ex-wife, in order to cover up a careless lie. When more lies backfire, Katherine's kids become involved, and everyone heads off for a weekend in Hawaii that will change all their lives.

Altruistic Jane finds herself facing her worst nightmare as her younger sister announces her engagement to the man Jane secretly adores.

All the couples are back for a wedding in Las Vegas, but plans for a romantic weekend go awry when their various misadventures get them into some compromising situations that threaten to derail the big event.

Robbie, a local rock star turned wedding singer, is dumped on the day of his wedding. Meanwhile, waitress Julia finally sets a wedding date with her fiancée Glenn. When Julia and Robbie meet and hit it off, they find that things are more complicated than anybody thought.

To the amusement of their adult children and friends, long-divorced couple Don and Ellie Griffin are forced to play the happy couple for the sake of their adopted son's wedding after his ultra conservative Catholic biological mother unexpectedly decides to fly halfway across the world to attend. With all of the wedding guests looking on, the Griffins are hilariously forced to confront their past, present and future - and hopefully avoid killing each other in the process.

An architect heads to the altar with her fiancé, unsure of her marriage and their future. She relives her disastrous wedding day, put together by her fiance’s overbearing mother, over and over until, with the help of his brother, she begins to face her biggest fears and discover what she really wants in herself and in her life.

When an engaged couple can’t agree on anything, the mother of the groom hires a wedding planner and an event planner to help put together the wedding of their dreams. The two planners are as different as night and day, but as they too learn to compromise, they discover opposites do indeed attract and can combine to produce incredible results!

Con artist Gwen moves into Newton's empty home without his knowledge and begins setting up house, posing as his new wife.

Five years after jilting his pregnant fiancée on their wedding day, out-of-shape Dennis decides to run a marathon to win her back.

Office temp Charlotte Cantilini thinks she's found Mr. Right when she starts dating gorgeous surgeon Dr. Kevin Fields. But there's a problem standing in the way of everlasting bliss: Kevin's overbearing and controlling mother, Viola. Fearing she'll lose her son's affections forever, Viola decides to break up the happy couple by becoming the world's worst mother-in-law.

With the wedding of her younger sister fast approaching, Kat Ellis faces the undesirable prospect of traveling alone to London for the ceremony. While this is bad enough, Jeffrey, the man who left her as they moved closer to marriage, happens to be the groom's best man. Determined to show everyone -- most of all Jeffrey -- that her romantic life is as full and thrilling as ever, Kat hires a charming male escort as her date.

John and his buddy Jeremy are emotional criminals who know how to use a woman's hopes and dreams for their own carnal gain. Their modus operandi: crashing weddings. Normally, they meet guests who want to toast the romantic day with a random hook-up. But when John meets Claire, he discovers what true love – and heartache – feels like.

When she receives word that her longtime platonic pal Michael O'Neal is getting married to debutante Kimberly Wallace, food critic Julianne Potter realizes her true feelings for Michael -- and sets out to sabotage the wedding.

Hallie Parker and Annie James are identical twins who were separated at a young age due to their parents' divorce. Unbeknownst to their parents, the girls are sent to the same summer camp, where they meet, discover the truth about their relationship, and come up with a plan to switch places in an effort to reunite their mother and father.

History -- make that high school -- may repeat itself when Marni learns that Joanna, the mean girl from her past, is set to be her sister-in-law. Before the wedding bells toll, Marni must show her brother that a tiger doesn't change its stripes. On Marni's side is her mother, while Joanna's backed by her wealthy aunt.

Newlyweds Nick and Suzanne decide to move to the suburbs to provide a better life for their two kids. But their idea of a dream home is disturbed by a contractor with a bizarre approach to business.

When bachelor Walter Davis is set up with his sister-in-law's pretty cousin, Nadia Gates, a seemingly average blind date turns into a chaotic night on the town. Walter's brother, Ted, tells him not to let Nadia drink alcohol, but he dismisses the warning and her behaviour gets increasingly wild. Walter and Nadia's numerous incidents are made even worse as her former lover David relentlessly follows them around town.

With just weeks before their royal wedding, Paige and Edvard find their relationship and the Danish monarchy in jeopardy when an old law is brought to light, stating that an unmarried heir to the throne may marry only a woman of noble blood or else he must relinquish his crown.