Elegant Fashion Sale Instagram Post

I need a creative and professional design for an Instagram post promoting a formal wear fashion sale. The theme should be elegant and modern, using soft beige and gold tones.

Key requirements:
- Limited-time offer message
- Use of soft beige and gold tones
- Elegant and modern design

Ideal skills and experience:
- Strong graphic design skills
- Experience with Instagram post designs
- Ability to create elegant and modern aesthetics
- Experience in fashion-related designs is a plus