Jen and Vince prepping summer wedding.

According top sources close to Jennifer Aniston, the actress is planning the wedding of the century. Though she has only been dating her The Break-Up co-star, Vince Vaughn for a few months, Jen is eager to beat her ex, Brad Pitt down the aisle.

According to a source for Grazia magazine, Vaughn proposed to Aniston during a recent trip to Las Vegas. His offer proved hard to refuse when he presented Jennifer with a $175,000 engagement ring. A source told the magazine, "They haven't set an exact date yet, but are talking about early summer. Both Jen and Vince are clearing their schedules to have some time off to spend together on a proper honeymoon."

Though the exact date for the nuptials has not been set, sources claim that Jennifer’s pal, Oprah Winfrey has offered to host the event on her California estate. The estate would be a great setting for the extravagant affair Jen has planned. A friend of the actress told the Sunday Express, "She wants this to be grand and lavish on a scale not witnessed since Liz Taylor's marrying heyday. Does she want to upstage Brad and his bride-to-be Angelina? You bet! Jen's wedding is going to be the talk of Hollywood. Jen is more convinced than ever that Vince is the one."