What is the purpose in poem My mistress eyes are nothing like sun?

In Shakespeare's "My mistress' eyes are nothing like the sun," the poet argues that his lover's appearance surpasses the conventional comparisons made to the sun and other celestial bodies in Petrarchan sonnets.

The purpose of this poem is to subvert these conventions and challenge the Petrarchan tradition's idealized and hyperbolic descriptions of women.

Through a series of metaphorical comparisons highlighting her unique individuality, the poem aims to celebrate natural beauty rather than conforming to conventional depictions

In the poem Shakespeare presents an alternative perception of beauty highlighting that true love and appreciation goes beyond external superficial similarities but embrace individuality