In terms of gift giving to our girl friends; cards, stuff toys, shoes and such are too mainstream to give. Hence, giving them something new is really a perfect idea to try. Dresses could be a good idea yet something fun and sexy is more fun to have. Big girls are not fond of cute stuff.
Probably, they are more into something cool and unique like lingerie for instance. Eventually, one can purchase for cheap lingerie yet quality is beyond expectation. There are varieties of shops available either online and offline. The only thing that is needed is the patience of looking for such value.