Here are links to options for each of the missing pieces. You definitely don't need to get these specific items and can just use them for inspiration, but the links are also here if you'd like to simplify things and just pick from what I've linked to.

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Outfit #1 (Denim on Denim)

Brown Boots/Shoes

Option 1
Option 2 (would pair with tube/ankle socks)
Option 3
Option 4
Option 5
Option 6
Option 7

(Any of these styles would work - whatever she’ll get wear out of is fine.)

Outfit #2 (Jeans + Bomber)

Shirt

Option 1
Option 2

(Any boxy, white tank will work, preferably not ribbed. I really liked how the gray one she was wearing fit her.)

Sneakers

Option 1
Option 2
Option 3

Outfit #3 (Dress)

Dress

Option 1 (Dark Blue or Black)
Option 2
Option 3
Option 4
Option 5 (Navy Blue or Black)
Option 6 (Green, Wine Red, or Beige)