Apparently Friday's Child was Georgette Heyer's own personal favourite out of her novels. I can't say I agree with her. Friday's Child has some funny moments and some likeable secondary characters but for the most part I found Hero and Sherry's antics annoying and frustrating instead of being amusing and entertaining. I suppose Hero is sweet and kind but she's also passive, silly and dim. Sherry was so immature, insensitive and selfish that I couldn't stand him. He even hits Hero on a few occasions! Sherry and Hero are sooo not my kind of hero and heroine!
If Friday's Child had only been about Sherry and Hero then I think I would have probably hated it. But thankfully Sherry's three best friends were so funny and engaging that they partly redeemed the book for me. I really liked that George got his own romantic subplot with Isabella too. It was was so much more interesting and entertaining than the romance between Sherry and Hero. Because of these secondary characters I do think that Friday's Child is worth a read if you're already a Heyer fan but I wouldn't call it a good introduction to her works.