Petite-friendly basic white t-shirts
Gap compact t-shirt: xxs (This top also comes in petite but I found it to be too short in petite. It is also a snug fit so you may want to go up a size).
Jeans: 24 extra short - relaxed fit, you may want to size down for a closer fit
My measurements for reference: 4’10” 105lbs bust, waist, hips 32”, 24”, 35” size 5 shoe. 25” inseam measurement to my ankle bone.