2 sentences for 天衣无缝 (tiān​yī​wú​fèng)

1. 他的谎话编造得天衣无缝，大家都相信了。

   tā de huǎng​huà biān​zào de tiān​yī​wú​fèng, dà​jiā dōu xiāng​xìn le.

   His lies were so seamless that everyone believed them.

   Source: Dong Chinese Dictionary

2. 传说仙女的衣服没有缝儿，真是天衣无缝。

   chuán​shuō xiān​nǚ de yī​fu méi​yǒu féng'er, zhēn shì tiān​yī​wú​fèng.

   Legend has it that the robes of celestial maidens have no seams—truly 'seamless'.

   Source: Dong Chinese Dictionary