gěi biérén mǎi yīfu dàn bù zhīdào chǐmǎ shí kěyǐ gǎi mǎi wéijīn bāo màozi huò lǐpǐn kǎ

给别人买衣服但不知道尺码时，可以改买围巾、包、帽子或礼品卡。

When buying clothes for others but don't know the size, you can switch to buying a scarf, bag, hat, or gift card.