When did high heels become feminine?

Women did not begin wearing heels until the mid-1500's. The first recorded high heel on a woman was worn by Catherine de Medici. Previous to this, woman had only worn platform shoes

Do high heels have a weight limit?

Some people can't wear high heels at 150lbs, others are comfortable at 250+lbs. It all depends on your personal preference, foot type, and luck. While you can never be too fat for heels, wearing them will often get less comfortable as you get heavier. In general, you cannot be too heavy to wear high heels.