Quarterback Trevor Lawrence and his wife Marissa are celebrating their first Halloween as a family of three. They marked the holiday a few days early as they attended a costume party and debuted their costumes alongside daughter, Shae.The Lawrence family chose the iconic, "Flintstones" as their theme this Halloween. Trevor Lawrence was dressed as Fred Flintstone, Marissa was his wife, Wilma Flintstone and infant daughter Shae was dressed as the couple's daughter, Pebbles."WILMAAAAA," Marissa captioned the Instagram Story.The Lawrence's depicted the iconic cartoon, "The Flintstones" for their theme this Halloween. (Photo via Marissa Lawrence's Instagram Story)Marissa Lawrence then shared an additional photo of Trevor Lawrence and their daughter, Shae."My happy little Pebbles," Marissa wrote.The Jacksonville Jaguars quarterback and their daughter Shae enjoying time together. (Photo via Marissa Lawrence's Instagram Story)In a final photo on her Instagram Story, Marissa revealed that their daughter's Halloween costume was actually her first costume, handmade by her own mom."This was my first Halloween costume that my mom handmade!! It couldn't be more perfect for Shae (heart emoji)" Marissa wrote.Trevor and Marissa Lawrence's daughter wore her very first Halloween costume. (Photo via Marissa Lawrence's Instagram Story)Trevor and Marissa Lawrence welcomed their daughter Shae in January. Since then, the couple has marked her first-year milestones in social media posts.Trevor Lawrence's wife Marissa shared recap of daughter's first trip to LondonTrevor Lawrence and the Jacksonville Jaguars made the trip to London for the Week 7 matchup against the Los Angeles Rams. The Jaguars quarterback had the support of his wife Marissa and daughter Shae who made the trip across the pond.Marissa Lawrence recapped their mother-daughter trip to London, her daughter's first experience. They toured the city and took in the sights and sounds and even took a trip on the iconic London Eye landmark."London again 🇬🇧❤️" Marissa captioned the Instagram post. View this post on Instagram Instagram PostWhile Marissa Lawrence and her daughter enjoyed their visit, the Jacksonville Jaguars unfortunately couldn't pull off the victory. The Jaguars are 4-3 and in second place in the AFC South division rankings.