20 month old is a cry baby!!!!

I did just have a baby boy she has an 8 year old brother too, she was a little cry baby before but now it's a little ridiculous she crys over every single little thing!!! Like I mean everything! I don't know what to do she's crying 24/7 over anything is this normal??? I'm telling y'all that's how bad she's a cry baby to where I'm asking myself if it's normal every minute that ticks she's crying!!!!! 😩😩😩😩😩