Reese Witherspoon married Jim Toth, a talent agent previously unknown to the public, after divorcing her first husband, actor Ryan Phillippe.
Anne Hathaway married longtime boyfriend and jewelry designer Adam Shulman in September 2012.
Julia Roberts is married to cameraman Danny Moder, and has three children with her husband, who could be sitting next to you without being recognized.
George Clooney said he would never get married, but then he did ... to British lawyer Amal Alamuddin.
Patrick Dempsey married hairstylist and makeup artist Jillian Fink in 1999. They have three children together.
Matt Damon is married to former bartender Luciana Barroso, with whom he has four (!) children.
It seems hard to believe now, as Kate Middleton is a global celebrity and international style icon in her own right, but in marrying a commoner with no royal roots - Kate was merely his college girlfriend - heir to the throne Prince William broke with centuries of tradition.
Jessica Alba began dating relative unknown Cash Warren almost a decade ago and it took, with two beautiful daughters and six years of marriage and counting to show for it.
Vince Vaughn's wife is Canadian realtor Kyla Weber!
Tina Fey is married and has two children with composer, producer and director Jeff Richmond, who worked on her hit show 30 Rock among others.
Nicolas Cage has had some high-profile relationships, but his current wife is former waitress Alice Kim.
Jon Bon Jovi
Jon Bon Jovi's wife is his high school sweetheart, Dorothea Hurley.
Aaron Paul married philanthropist Lauren Parsekian in 2013. They're an incredibly cute couple you should follow on Instagram.
Woody Allen married his former partner Mia Farrow's adopted daughter, Soon-Yi Previn, in 1997. That's definitely a unique one.
Kevin Jonas married Danielle Deleasa, a former hairdresser from New Jersey, in 2009, the peak of his band's fame. The couple met when both of their families were on vacation in the Bahamas.
Christian Bale and Sibi Blazic married in 2000. The actor met her when Blazic was Winona Ryder's personal assistant.
Chris O'Donnell married his high school sweetheart Caroline Fentress all the way back in 1997. They have five children together.