Aug 21 (Reuters) - Francesca's Holdings Corp
* Francesca’s announces departure of EVP and chief merchandising officer
* Preliminary comparable sales for fiscal Q2 ended July 29, 2017, decreased 3%
* Preliminary diluted earnings per share for Q2 is expected to be $0.20
* "Back-to-school has been off to a very challenging start and our comparable sales have further decelerated from July"
* Departure of Laurie Hummel, chief merchandising officer; company has commenced a search for a new chief merchant
* Q2 earnings per share view $0.16 -- Thomson Reuters I/B/E/S Source text for Eikon: Further company coverage: