I see some women seem to have cake from well off families with parents who paid for their uni, and also gave them money to buy nice clothes etc, so I always feel like they had a head start in life.
Think about it this way OP. Of course parents with the means to do so want to indulge their children with a point. But continue doing this, particularly into adulthood, and you do them no favours.
I can look around me and know that absolutely everything I have I earned myself. 'Nice clothes' are not all that - I always preferred the satisfaction of rummaging around vintage shops and finding something truly unique.
I was skint whilst going through 8 years of university throughout my twenties, when all my friends had the flash cars, designer gear/handbags etc. But a nice new dress teaches you - what? I'd chosen the life I wanted, and if I could go back and do the same thing again I'd do it in a heartbeat.
Our culture primes us to value certain material things, but they're not always the most important things. It depends where your personal value system stands.
As for being struck by the ugly stick, I'm sure you haven't, but even if you had, don't you believe you're thinking about yourself in the wrong way? What are your good points? Your talents? Your personal qualities? Your value as a friend? I'll bet if you listed these you'd find loads. As far as your physical appearance is concerned, if it's any comfort ageing is a great leveller and this (if we're lucky) is going to happen to all of us! When you look at those things you've considered to be good about yourself, you'll still have that. Intelligence, kindness and the like don't diminish with age, and the prospect of 'invisibility' should hold no fear. But if all you have is a pretty face ...