Neil Patrick Harris is celebrating his twins' 16th birthdays 🎉 The actor and 'How I Met Your Mother' star, 53, couldn't be a prouder dad, sharing lovely photos of daughter Harper and son Gideon looking so grown up 🥰 Neil shares the twins with husband David Burtka, 51, writing "❤️ David for being a remarkable dad." 📸 : Getty, #neilpatrickharris #birthdays