There are at least two ways to say "beautiful" in Cantonese:
- éš ( colloquial;  means good-looking  as in é“相 pretty photos; high quality or high class as in é“车 - good cars such as Lamborghini  or Porsche )Â
- 美麗 (美丽)  (beautiful, not just pretty; formal;  sometimes shortened to  just 美.  so 美国 can mean beautiful country)
- å¥½å¥½ç‡ Â (very good looking )
Examples:
1. You are so beautiful! Â ä½ å¥½é“ï¼
2. I don't need those beautiful lies!  我唔需è¦ç¾Žä¸½å˜…谎言。
Note: tell a lie = è®²å¤§è¯ (colloquial.   lie = å¤§è¯ Â literately mean "big talk" ).   谎言 means "lie(s)" and it's very formal.
However, we do use 美丽的(or 嘅 )谎言 is a set phrase or idiomatic phrase  for "beautiful lies".
3. ä½ ç§å˜…花好é“å•Šï¼ Â The flowers you are planting are very beautiful (pretty)!
4. The skirt you are wearing is pretty good looking.  妳ç€ç´§å˜…æ¡è£™éƒ½å‡ é“å–ŽÂ Â nei5 zoek6 gan2 ge3 tiu4 kwan4 dou1 gei2 leng3 wo3
5. You look  beautiful with this pair of glasses. Â ä½ æˆ´å‘¢å‰¯çœ¼é•œå¥½å¥½ç‡å–Žã€‚ nei5 daai3 ne1 fu3 ngaan5 geng3 hou2 hou2 tai2 wo3
6. Your eyes are beautiful. Â ä½ å˜…çœ¼ç›å¥½é“ï¼