* General terms: You could use general terms like group, crowd, team, assembly, bunch, etc. depending on the context.
* More specific terms:
* A bevy of girls - This is a traditional option, often used for young ladies.
* A gaggle of girls - This is a more informal option, suggesting a group of chatty or noisy girls.
* A clutch of girls - This implies a close-knit group or a group of young girls.
Ultimately, the best collective noun for girls depends on the specific situation and the impression you want to create.