Dreams involving makeup and appearance often reflect themes of identity, self-expression, and how we perceive ourselves in relation to others. In your dream, your friend wanting you to wear the same lip shades as her could symbolize a desire for connection or acceptance. The act of her handing you fake lips suggests a feeling of inadequacy or pressure to conform to someone else's standards of beauty or style.
Your hesitation to wear the fake lips because of your own larger lips may indicate a struggle with self-acceptance or a concern about how you are perceived by others. It can also reflect a fear of losing your individuality in the pursuit of fitting in or meeting expectations set by those around you.
The transition from red to neutral-pink lips in the dream might suggest a move from a bold, attention-seeking persona to a more subdued, accepted version of yourself. This could point to conflicting feelings about how you want to present yourself versus how you feel comfortable being.
Overall, this dream might be prompting you to explore your own sense of identity and comfort in your appearance, as well as the pressures you might feel from friends or society. Consider what aspects of your identity you feel are authentic and what pressures you may be experiencing to alter or hide those parts. Embracing your unique characteristics, including your fuller lips, could lead to a more genuine expression of yourself in waking life.