George Stephanopoulos and Ali Wentworth are doting parents to two daughters, who are growing up fast!MORE: What George Stephanopoulos really thinks of co-star Robin RobertsThe celebrity couple are set for a big change next year as their youngest daughter, Harper, is set to fly the nest. Ali shared a photo of Harper over the weekend on the way to view colleges, captioning it "College tour weekend".When Harper leaves home, her parents will officially be empty nesters, which will no doubt be emotional and bittersweet for the couple.VIDEO: Ali Wentworth and George Stephanopoulos' unbelievable love storyThe family waved their firstborn Elliott off to college last year, and Ali at the time admitted that it had been "brutal".MORE: Ali Wentworth stuns in leopard print swimsuit while at home in New YorkMORE: George Stephanopoulos mourns death of colleague live on airHowever, the proud mom also revealed on her Go Ask Ali podcast that her teenager was "thriving" there.