How to achieve this physique

I am obsessed with the "lean", "toned", and "elongated" look for a while now and I would like to get it. I would love to create a workout routine where I can achieve this look.. any advice? For context, my height is 5'4 and I'm 145 in weight.. I eat pretty healthy and have a plant based diet and I am also a pretty active person (I do pilates, sometimes lift weights, and I try to get as many steps as I can) despite being on my computer all the time for school and work. Also should I do weight/strength training or pilates (mat and reformer) Thanks! (These images were found on Pinterest)