It's easy enough, and totally essential, to fill in those side "patches", which are often called "temple points". Check my recent photos and my recent template for ideas on how you can solve the problem...

I'll never understand these high profile wearers (like the pic you've posted) who seem to have an inability just comb their side hair forward (or leave it a little longer)... it's really not that hard! In fact it's super-easy!! so why do so many people have wide forehead syndrome? I'll never understand it...