Don't go for 3/4 pants because they "cut" your legs off, so you look short. I would go for ankle jeans if you want that look. I'm 5'3" and normal ankle jeans fit me perfectly. Anything with vertical stripes will make you look taller and leaner, this goes for everyone.
I also like loose fitting tops, especially for summer, they're much more airy and casual. You can wear heels, wedges for summer, they look good on everyone. Remember to not block off parts of your body, such as a shoe strap + below the knee skirts. That will make you look squat (coming from experience). Personally, I prefer skirts that are a little above the knee, so that it makes me legs look longer. Short skirts make me uncomfortable, because I constantly have to be on the lookout.
Just a reminder, if you're wearing tights make sure you cover up your butt with a long top, because without it, you're just revealing too much. People don't need to see every curve of your body.
Hope this helps!