Alison Wolf's main point in The XX Factor is that women in the top fifth of the economy live lives more like their male counterparts - high education, long careers, hired help.
In fact, if they hire help and go right back to work after they have kids, women of the top classes do not even pay a 'mommy penalty' in their earnings. Elite women, in other words, are living more like elite men than they are like other women.
The bottom 80% of the economic structure is very gendered. The Fortunate Fifth, though, are becoming more integrated and similar to one another.