Gwen Stefani and Blake Shelton to wed by the 'end of the year' in a backyard ceremony?

Within a year of their whirlwind romance, music power couple Gwen Stefani and Blake Shelton are already sparking wedding rumours. According to a new report, the Used To Love You singer might be seen walking down the aisle by "the end of the year" with her boyfriend Shelton.

"They want to get married before the end of the year," a source close to the 40-year-old country singer told Us Weekly, "They are both very, very happy. Blake is having the time of his life with Gwen and feels so comfortable around her."

If rumours are to be believed, the Hollaback Girl hitmaker has also hired celebrity wedding planner, Jerri Woolworth to organise her nuptials.

"Gwen has said they both want something more low-key than their first weddings," another source had earlier told the magazine. "It would likely be at Blake's ranch [in Oklahoma] or in the backyard. Gwen doesn't really care, she is just in love with Blake and their life together."

Fans of the singer-couple have been speculating a wedding for long, and last Friday Stefani herself reinforced the marriage talks when she got "tongue-tied" answering a question about her future nuptials during an interview. While on air with Ryan Seacrest, the Grammy-winning songstress said, "Everything is going so quickly! I'm in the moment and, um, look at me, you've got me tongue-tied!"

"I look at this year and I think, 'I just feel so awake.' I feel so alive and so grateful...This year has been so full of so much joy," she added.