26-year-old Emma Bowker of Yorkshire, England got married a few weeks ago, and her 29-year-old sister Lucy was her bridesmaid.  Lucy was nine months pregnant . . . and RIGHT before the wedding, she went into labor.



But because people get CRAZY about weddings and Lucy didn't want to miss her sister's wedding or steal her sister's thunder . . . she just kinda sucked it up.



Lucy still walked her sister down the aisle . . . stayed through the ceremony . . . then even posed for a few photographs.  Finally, as the reception was starting, the contractions started hurting and she was rushed to the hospital.



She gave birth to her daughter Izzy a few hours later.  (Daily Mail)  (Here are a few of the photos that Lucy took at the wedding while she was in labor.)