She is known for her roles as Katie Snyder on As the World Turns and as Christine "Aubrey Wentworth" Karr on One Life to Live. She is the only child of a retired United States. Air Force officer father and a real estate agent mother. Julia was born on-air, during an episode of the TLC series, A Baby Story, which aired September 15, 2004.
In June 2010, Conn and her former As the World Turns co-star, Austin Peck officially came out as a couple at the 37th Annual Daytime Emmy Awards.
Their relationship was covered in the February 15, 2011 and March 8, 2011 issues of Soap Opera Digest magazine. The February Valentine"s Day issue included an interview with Peck, covering his move to One Life to Live, along with his relationship with Connecticut
The couple were married on July 1, 2011. The couple have two daughters Keira Grace Peck (born November 2012) and Morgan Theresa Peck (born July 2015).
Conn starred in the 2008 movie, iMurders, in the role of Sandra Wilson.
She also appeared on the Canadian teen show Breaker High. From 1998 to its finale in 2010, Conn portrayed Katie Snyder on Columbia Broadcasting System" As the World Turns.