When to buy maternity clothing?

Sarah

Hi all! I am 12 weeks pregnant and trying to get through the summer with what I currently have so I don’t have to buy for two seasons. But I don’t know if I can make it for two more months. When do you plan to start buying maternity? Do you get pants earlier and dresses/tops later? I’m going to a wedding in August so I’m debating whether to buy a looser regular dress or a maternity one (which may be gigantic).