1: 1. Audrey Hepburn's timeless Givenchy dress. 2. Marilyn Monroe's captivating pink gown. 3. Grace Kelly's elegant Edith Head ensemble.

2: 4. Cher's show-stopping Bob Mackie creation. 5. Lupita Nyong'o's dazzling Prada gown. 6. Cate Blanchett's ethereal Armani Privé dress.

3: 7. Angelina Jolie's striking Atelier Versace gown. 8. Jennifer Lopez's iconic green Versace dress. 9. Björk's unconventional swan-inspired Marjan Pejoski outfit.

4: 10. Gwyneth Paltrow's pink Ralph Lauren gown. 11. Halle Berry's mesmerizing Elie Saab dress. 12. Lady Gaga's avant-garde Azzedine Alaïa ensemble.

5: 13. Kate Hudson's golden Versace gown. 14. Elizabeth Taylor's glamorous yellow dress. 15. Charlize Theron's sleek Dior Haute Couture gown.

6: 16. Jennifer Lawrence's stunning Dior dress. 17. Nicole Kidman's intricate John Galliano creation. 18. Rihanna's daring Adam Selman gown.

7: 19. Michelle Williams' enchanting Vera Wang gown. 20. Julianne Moore's breathtaking Chanel dress. 21. Emma Stone's stylish Elie Saab jumpsuit.

8: 22. Meryl Streep's regal Lanvin gown. 23. Penélope Cruz's stunning Versace dress. 24. Emma Watson's eco-friendly Calvin Klein attire.

9: 25. Marion Cotillard's unique Jean Paul Gaultier dress. 26. Sandra Bullock's elegant Marchesa gown. 27. Zendaya's Cinderella-inspired Valentino dress. Note: These are just brief descriptions to give an idea of the most iconic Oscar outfits of all time. For detailed content, please provide more specific instructions.