1. Diana's three best pals are the women who shared her bachelor-girl pad in in Knightsbridge before she was married.

2. Bachelor girl - Bachelorlike - clothes horse - clothes-horse - clotheshorse - death chamber - hempen collar - mademoiselle - sempervirent - spinsterlike - subdebutante - vestal virgin 13 letter words electric chair - lethal chamber - young creature

3. Baccillum bach trumpet bacharach bacheller bachelor bachelor girl bachelor of arts bachelor-at-arms bachelor's bachelors-at-arms bacillar bacilli bacillus back boiler back marker back number back passage back river back scatter back-filleted back-pedaling back-pedalling back-seat driver backbencher backbiter backbiting backbitten backboneless