Reality TV star-turned-author and fashion icon Lauren Conrad is set to follow fellow former THE HILLS star Kristin Cavallari down the aisle - sources report her boyfriend William Tell is ring shopping.

Friends tell Life & Style magazine that Tell is head over heels in love with Conrad - and he's looking for the perfect engagement ring.

One pal tells the publication, "William told a friend that Lauren was the one and he was shopping for an engagement ring. He said he was planning on proposing very soon and can't wait to pop the question.

"He knows he needs to get the ring right since she is so stylish and has a definite taste when it comes to jewellery and fashion."

The 32 year old has been dating Conrad, 26, for eight months.