If you've been looking for your fave celeb to tell you what's hot and what's not for summer fashion, fear not ... because Amelia Hamlin's here to deliver the good word.

The 20-year-old IG model has been in the spotlight recently for her relationship with Scott Disick of Jenner-Kardashian fame. And now, she'll be famous for another thing -- launching an apparel collection with Boohoo ... to help you stay cool even in a heatwave.

The collection features over 40 different styles ... cut-outs, silhouettes, and mini dresses, along with swimwear and cover-ups. Each piece is designed to mimic Amelia's "confident and energetic trendsetting style" ... so if you like what you see on the regs, listen up.

Here's what she had to say about it ... "I am so excited for my edit with boohoo! I have personally been a fan of boohoo forever," adding ... "They have all the best styles that make you look and feel amazing. This collection is perfect for the summer, and I can’t wait for everyone to enjoy it!"

You can shop the Boohoo x Amelia Gray collection over at the retailer’s site ... courtesy of us.