Only few thing I remember is main character is reincarnated, female and her child is Twin and is secretly CE. also it may be right or wrong but I clearly remember in one chapter some kind of b*tch tried her dress but failed look pretty but ended up looks like prostitude found on side of street.
If you're still looking, it might be this: One Child Two Treasures: The Billionaire Chief’s Good Wife Edit: Wait, I don't think the MC is reincarnated in this one.
Sounds like a cross between The CEO’s Villainess Childhood Friend and Rebirth of the Rich and Wealthy