My daughter asked me just yesterday to come out to the back of our yard and look at this super pretty plant with purple stems/branches with super pretty hanging clusters of green, purple and white berries which appear to blossom into little white flowers. The leaves are fairly large long and pointed at the tip.
I was shocked to see this plant for the first time after living here for 5 years in the Carolinas. The area it is in is out in our semi wooded/forest which receives some morning sun.
It is a super pretty plant that has seemed to grow very rapidly and I am concerned that it may be invasive. Can anyone help me identify?!

Pokeweed (Phytolacca americana)

to NGA

You found a Pokeweed (Phytolacca americana), a native plant that seems to be common all the way across the U.S.

We seem to have an unusually large number of Pokeweed ID request this year.

to NGA tracinvic

Thank you so much for your replies, I was thinking that was what it could possibly be after looking it up in my Southern Living Garden book, which called it a Joe-Pye Weed(Euonymus americanus) although the definition clearly stated that the stems were green and mine are definitely purple.

Joe Pye Weed and Euonymus americanus are not the same plant and look nothing alike. Joe Pye may look sort of like Pokeweed in form but does not produce berries like Pokeweed.

This is Euonymus americanus Hearts-a-Burstin' (Euonymus americanus)
This is Joe Pye Joe Pye Weed (Eutrochium purpureum) there are actually several species of Joe Pye but they are all very similar.

Right, and do take note that all parts of the plant, Pokeweed (Phytolacca americana) are highly toxic so don't let your kids try eating them!

Here's the link to the entry in our database (porkpal gave it up above, too). You'll see the pictures there look exactly like your plant, including the red/purple stems so it's neither Euonymous nor Joe Pye weed.

Pokeweed (Phytolacca americana)