I know that every good MLB fan fiction has the reveal, so here's my swing at it. Spoiler: It's only half of the reveal. Sorry if that's disappointing.
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Marinette's POV

     Today is the day I tell Adrien. I can't keep pretending to not know he's Chat.

     I put on a white dress, with sandal flats, and put my hair into a braid crown, with the rest flowing freely.

     I walk out of the room, and start to make breakfast since everyone else is asleep. I make pancakes, bacon, and cheesy scrambled eggs.

     Alya is up next, the boys sleep late like always. "Hi, Alya! Just making some breakfast!" I tell her cheerfully.

     "Smells great! Your happy today!" Alya replies.

     "Thanks, and yeah I guess so" I respond. She's wearing a purple dress, and purple heels, her hair in a braid, with a purple streak! "You have purple hair!"

     "I know! You like it, I'm so glad!" Alya responds happily.

     Then I notice the pancakes, eggs, and bacon are done. "Help me get these out!" I tell Alya, she gets the bacon, while I do the pancakes, the she does the eggs. "Thanks!"

     "No problem!" Alya replies. "Can I wake up the boys?" She asks mischievously. I can tell she's got a good plan.

      "Go ahead" I reply. She whoops.

     I get the breakfast foods into four plates, with more on two than the rest, boys. I roll my eyes.

     I suddenly hear a scream. Alya must have woken the boys up.

      "Yumm!" Nino exclaims.

     "Can I please have some now?" Adrien begs.

     "Ok" I reply. Then I put a plate at their seats on the table. They dig in. I refill their plates, then eat myself. Nino and Adrien wear their usual clothes. 

     "Ummmm, so Adrien I have something to tell you. Maybe later if you want." I say meekly.

     "Go ahead, say it now" Adrien responds.

    "You sure?" I ask. "It's one of your secrets."

     "Nino know all of them, it's fine." That surprised me, Nino knows?

     "Well, I-I, ummmm, f-found out that y-your, ummm, Chat Noir" I stutter. His eyes go wide.

     "How did you find out?" He asks me.

     "You called me Princess, only Chat does that" I say nervously and quietly.

     Alya squeals. "YOUR CHAT NOIR?!!?!??" She hollers at him. "I NEED TO PUT THIS ON THE LADY BLOG!!!" She finished squealing.

     "No, you can't" Adrien says hurriedly. "It will make it so Hawkmoth finds me and takes me down."

     "Ok, if it's that bad" Alya says defeated.

     Nino faints. Alya laughs. We move on talking about life.

     We hear a loud crash and screams.

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Hope you guys liked this!!! I am going to include Tikki some more. Sorry if this is a bit of a filler chapter. This actually might be one of my longest chapters yet. Have a great day, and stay Miraculous!