Credit: Michael Buckner/Getty Images; Jordan Strauss/

Molly Sims' beau put a ring on it!

The actress and jewelry designer's boyfriend Scott Stuber proposed the weekend of May 20, her rep confirmed to Us Weekly

Sims, 38, dated the Love and Other Drugs producer for a year-and-half before he popped the question.

"They're very happy!" her rep added.

Sims is best known for her appearances in Sports Illustrated's Swimsuit Issues and on TV's Las Vegas. She broke up with Thank You For Smoking actor Aaron Eckhart in late 2009.