Always one of Hollywood's most charming leading ladies, the actress has been looking more radiant and feminine since falling for Justin in 2011.
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The Washington DC-born son of a journalist and corporate lawyer, the 41-year-old is hip, sophisticated and makes her laugh.
After a spell when Jen, 44, wasn't so lucky in love, millions around the world want to celebrate with their heroine.
As the couple's nearest and dearest wait by the phone for hush hush information about the location and date, HELLO! takes a look at the romance that has made us all believe a second chance at love really is possible.