The tennis champion, 36, is saying "I do" to the Reddit co-founder, 34, in an intimate ceremony in New Orleans, Louisiana.
According to Page Six, details on the wedding have been kept scarce, though the two of them will reportedly be exchanging vows at the New Orleans' Contemporary Arts Center. According to British tabloid, Daily Mail, the exact location in New Orleans is kept under wraps.
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He said the suspect has been identified, but his name has not been released pending notification of next-of-kin. The shooter himself has been killed by police and several victims are now being treated at a local hospital.
"They have hired the best of the best and can't wait to get married in The Big Easy". The hall will be totally transformed'.
It's also understood that guests on the day will be banned from posting anything on social media, as Serena is believed to have signed a deal with Vogue magazine to publish exclusive pictures of the big day.
The couple are said to be bringing a nanny along to the wedding to take care of their baby.
Alexis will have a babysitter on hand just for her the entire night. She will be a part of the wedding as much as possible for an 11-week-old. They had announced their engagement last December.