Actress Olivia Munn and her sports star boyfriend Aaron Rodgers have adopted a new puppy.

The couple has been dating for almost two years and after previously taking in a young dog, named Chance, Olivia and Aaron decided to add another member to their growing pet family.

Showing off the tiny pooch on Instagram.com, Olivia wrote, "Meet Frank Rodgers. Frankie for short. Mr. Frank for business meetings.

"SOOO much love to Sasha from @loveleorescue for rescuing this sweet pup. We are so excited to have a brother for Chance! #adoptdontshop".

She also revealed little Frankie had already joined social media by sharing the pup's new handle, "@FrankieRodgers12", while Chance gave a warm welcome to his new "brother" in a snap of the two new pals hanging out on his Instagram account.

"Welcome to the fam lil' bro," the picture was captioned.

Olivia has long supported animal rescue centres, and when she became a 'mum' to Chance in 2014, she encouraged fans to follow in her footsteps by adopting instead of buying dogs.

"To anyone looking to bring a dog into their world, please choose to rescue instead of buying," she posted on Instagram. "There are so many amazing dogs that need love and a home and are waiting for someone to rescue them."

While Olivia and Green Bay Packers quarterback Aaron are happy to add to their furry brood, the actress' mother, Kim Schmid, is eager for the couple to step up their relationship romantically and get engaged.

"All my brothers and sister, and my nieces and nephews - they can't wait for them to get married," Kim shared with Entertainment Tonight.