I posted the bridesmaid picture ages ago asking about the brooch. I also researched Mrs Vickary Gibbs.
abbn --Previous Message-- : : I think that this brooch (posted originally : by Beth above) was most likely a gift to : Princess Elizabeth for standing as a : bridesmaid for Mrs. Vicray Gibbs (nee Jean : Frances Hambro) at her wedding to Andrew : Elphinstone. : : The maid of honour was Margaret Elphinstone : (later Margaret Rhodes) and she can been : seen in wedding pictures wearing the same : brooch. : : It also then makes sense why Princess : Elizabeth would wear the brooch at the : chrsitening of their daughter. :