Kathy ,
This will be my 4th European trip with ABD. I stressed over what to bring and what not to bring on the first 3 trips, then I figured out a plan. The weather has ( for the most part ) been the same as the North east when we travel and for the Southerners - bring layers, having said that here is what I do . 98% of our time is casual comfortable clothing.
I take out all the clothes, including shoes, jackets and toiletries that I "want to bring ". I put them into the suitcase and weight it. ( we have a hand held travel thingy that you hook on to the luggage handle and lift the suitcase and it beeps when it reaches the weight ). If I am over 45 lbs I look to remove items that I can do without. I know that the limit is 50 lbs. but I try ( yes John I do !!

) yes I try to have my suitcase at about 45 lbs just in case the scale at the airport " is off " . I KNOW that I will bring something back for me or family, and I believe ( Kevin help me out here ) that anything you purchase must be declared and in the carry on "in Case " Customs wants to see it !!! .... last time we went to Florence, I bought jewelry which I had to have in the original boxes ( BULKY ) and I bought Florence scarves and leather handbags - OH MY THEY ARE FANTASTICLY BEAUTFUL ,,, this time I'm looking for more leather and more scarves

( John don't read that part ).
Most times when I begin my packing the weight is over 50 lbs and I start removing items. I'm most conscious of what something weighs ..
Like Christy, I opt for Skechters brands over traditional sneakers and shoes as I find that shoes = the most weight of any other item so I try to narrow the number down ... I have found that I don't REALLY need "dressy" shoes if I have a pair of black ones. So from now till the end of Aug. I think about " how much does this item weight compared to something of equal value to me.
Hope this helps