Use a sling if she's not too heavy for you, but at 7 months she might be getting a bit big.
My younger dd was attached to the outside of my front for almost as long as she was on the inside, but she was small.
As she grew, she used to like to sit in a play ring more than being strapped into a chair - it was an inflatable, like a small fabric-covered paddling pool; it supported her back and her toys couldn't roll/fall out of reach.
If it's any consolation - she's growing up to be very independent but still extremely loving and cuddly.
my DD was like this. I spent the first 8 months or so with her attached to me. She spent a lot of time in a sling, but when she could sit, and crawl she was so much happier and would occupy herself a bit more. So don't worry, it won't last forever. In the meantime, what I did was to gradually introduce her sitting in the high chair - but right next to me so we were together iykwim. We spent quite a lot of time mumsnetting! We would also sit on the floor together, and gradually I wasn't feeling quite so suffocated. Now she's 19 months, and running around bouncing off the alls like a pingpong ball. She comes back for lots of hugs though.