Not sure if this is the right place, but I want a nice stylish carry on bag for the airplane

[theoriginalandbestrookie]

Never seem to get it right when I am travelling and I suspect that my stripy jansport backpack which I use when cycling is not the correct holdall for our girlie long weekend to Rome in September.

I need something fairly sizable as I am hoping to avoid having luggage, but stylish enough that I could bring it round with me when we get there.

Is this an impossible dream?
Answers please ( under £100 if possible)

I'm scr*wed if it doesn't as ryan air charge £60 each way.

I'm not going until September and we are only 10 mins away from the airport so I thought I might pop in and see if it fits in their luggage measurer - much better than finding out it doesn't on the day !

Mirpuppet - ryanair do provide dimensions on their website, my new bag is the max permitted, hence why I'd just like to double check.