"Oh, how cool/nice/cute/pretty!"
It's an expression of admiration or excitement. "Chulos" can refer to something that is visually appealing, stylish, or interesting. It can be used for a wide range of things, from clothes and accessories to places and people.
Here are some examples:
* "Ay que chulos tus zapatos!" (Oh, how cool your shoes are!)
* "Ay que chulo el vestido que llevas!" (Oh, how cute the dress you're wearing is!)
* "Ay que chulo ese paisaje!" (Oh, how pretty that landscape is!)
The phrase "ay que" adds an emotional element, expressing surprise, delight, or excitement. It's a common way to express appreciation in Spanish.