What are some fun things to do in London?

I'm going to London tomorrow, I'll be there for 3 days. I've never been before and I'm really excited, but I need some suggestions on things to do, like sightseeing, shopping, restaurants, etc. I'm a 17 year old girl and I'll be with my dad, so I'm looking for things to do that both of... show more I'm going to London tomorrow, I'll be there for 3 days. I've never been before and I'm really excited, but I need some suggestions on things to do, like sightseeing, shopping, restaurants, etc. I'm a 17 year old girl and I'll be with my dad, so I'm looking for things to do that both of us can enjoy, preferably on the less expensive side. I've heard Madame Tussaud's wax museum is something worth seeing, so fun things like that. Any suggestions for must-see places, nice parks, shops.. any help is appreciated, thanks =)
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