The word 이뻐줘요 doesn't make sense. You must not say "이뻐줘요". It is incorrect grammatically, since the word "이쁘다" is an adjective. An adjective "이쁘다" cannot be followed by aux verb "주다". Accordingly, "이뻐하다(the verb form of 이쁘다)" should be used with 주다 in this case. 이쁘다 + 하다 이쁘-ㅓ-하다 이뻐하다 이뻐하여 주다 이뻐해 주다. 이뻐해 주세요.

이뻐 (이쁘다) basically means "pretty" Frequently they use it to say e.g.: "(your daughter) has grew nicely" "nicely", "good", "pretty", "right", "well" 줘요 is often used to request (ask for) something So your example 이뻐줘요, depends on the context, could actually have different meanings. But for me, the fist thing that comes to my mind when I hear 이뻐줘요 is "pack it nicely (for me)" Hope this helps you a bit. And If I've made any mistake, someone could correct it

Thank you for asking this.