Reese Witherspoon has got engaged.

The 'Walk the Line' actress - who has two children, Ava, 11, and seven-year-old Deacon, with former husband Ryan Phillippe - has announced plans to marry Hollywood agent Jim Toth after almost a year of dating.

Her representative confirmed to UsMagazine.com: "They are engaged and extremely happy."

News of the couple's engagement is said to be supported by the 34-year-old beauty's children.

One insider said: "Ava and Deacon are happy with him."

Earlier this month, Jim fuelled engagement rumours when he was spotted visiting a number of high-profile jewellers in California, including the world-famous Harry Winston in Beverly Hills, looking for the perfect band to propose with.

A source said: "He was looking for something pretty big, around three or four carats. Reese probably wouldn't wear anything larger than that since she's not showy. Price wasn't an issue."

A friend of the agent revealed he was serious about Reese from the beginning.

The pal said; "Jim knows Reese is the one for him. It's what he's been waiting for. Getting engaged is a natural step for them."

Reese and Jim began dating last January, months after the actress ended her two-year relationship with Jake Gyllenhaal.

She split from former husband Ryan in 2006 after seven years of marriage.