I've always been on/off with running. It has to be outside, my iPod has to be charged and I have to be really feeling it. Portsmouth definitely makes me feel running. I can go to the seafront and run there and I'm loving it. Even better, SportsShoes gifted me a pair of New Balance running shoes! I've never had proper running shoes before and these really encourage me to get out and run more often.
(This is my 'look at my new shoes' pose)
Running jacket - Nike (outlet) || Wolverine tee - Topman (out of stock) similar here || Star leggings - Jack Wills (out of stock) || New Balance running shoes - c/o SportsShoes
As you can see I really don't wear proper running clothes. The running jacket is also new, a treat from my mam when I told her I was running more (she's mad into fitness and running so is all keen for me to be keen with her) which I'm really glad for to keep me warm while running but it's still light. Usually I wear old joggers or leggings and a t-shirt to run in, no different here! To be honest my usual get-up would be jeans and a tee so why would I make more effort for running? I'm all for looking decent but I never bother with looking amazing when I'm going to go running, It's not about that for me.
As long as you have the equipment that'll make sure you can run without getting injured, so good running shoes, and a good sports bra and a jacket to keep warm, then I think that's all you need. Whatever is most comfortable for running in.