Kristen Fox debates etiquette after her twin女儿仅被邀请参加生日派对，引发关于双胞胎邀请规则的讨论。 Since the instruction specified English, here is the revised sentence: Kristen Fox debates etiquette after her twin daughter was excluded from a birthday party, sparking discussion.

Twin mom Kristen Fox sparked a debate when her daughter Jayna was invited to a birthday party but her identical twin, Kinsley, was not. Fox took to TikTok, arguing that twins should be invited together to avoid hurt feelings, which led to varied opinions. Etiquette experts suggested considering the feelings of the excluded twin but noted parents aren't obligated to invite both. It turned out the exclusion was due to an Evite glitch, but Fox remains firm on her "all or nothing" stance.