Morning dress is a fancy outfit that people wear to special events during the day like weddings or fancy parties. It looks kind of like a suit, but with some special pieces.
First, there is a long jacket that is usually black or gray. It has tails that go down to your knees in the back. The front of the jacket is shorter, so you can see the fancy shirt and pants underneath.
The shirt is usually white and has a stiff collar that sticks up. It might have fancy designs on it or be made of a special fabric like silk. The pants are usually black and are a little bit wider at the top and get narrower as they go down towards the ankles.
You also wear special accessories with morning dress. There is a vest that goes over the shirt and under the jacket, and it usually matches the pants. You wear a tie or a bowtie around your neck, and you might even wear a top hat!
Overall, morning dress is a very fancy outfit that is worn for special occasions during the day.