A teen with autism has gone viral for his heartwarming reaction when his girlfriend, who has Down syndrome, gave him a first look at a new dress she was set to wear to a gala. Lukas Lazauska, 19, was blown away by girlfriend GiGi Gianni, 20, as she came out of the fitting room at a store in Woodfield Mall, in Schaumburg, Illinois, while trying on new dresses. GiGi's mom, Nancy, captured the sweet moment on video on February 4, before her daughter later shared the clip on social media. Nancy said GiGi was trying on dresses for her annual ‘GiGi's Gala’, an event tied to her charity, GiGi's Playhouse, which provides achievement centers for people with Down syndrome. There are more than 50 brick-and-mortar centers currently across the United States, and each year GiGi hosts a gala to celebrate the volunteer-run organization's success.