Limited budget, girls trip, 3 days/2 nights
Lucky for you ladies, San Francisco is very walkable and public transportation-friendly, so you can get around for fairly cheap!
Here are my list of favorite budget-friendly places:
Have fun, ladies!!
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For the outdoors on a budget, please do not leave without walking through the Muir Woods. There is a shuttle service there that is inexpensive. Visit here for more info: http://www.parksconservancy.org/ If you have never experienced redwood trees, it's a must.
If you've never been to San Francisco before, and are open to something new, AsiaSF can be a fun girls night out. Music, good food and dancing after dinner, if you're in the mood.
Drive up to Napa/Sonoma, get a couple of amazing sandwiches and other picnic treats at
Oakville Grocery, and do some wine tasting.
See if there's Shakespeare in the Park playing at Golden Gate Park, or take in the Aquarium or De Young Museum.
Have fun!
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Fisherman's Wharf, Ghirardelli Square Shopping Center, Alcatraz are all fun places to spend time in SF and relatively low cost.
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Obvious answer is Golden Gate Park, Golden Gate Bridge, Ocean Beach, Crissy Field picnic
Twin Peaks in the night - I would recommend and hope it's not foggy
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