Melissa Gilbert and Timothy Busfield

Melissa Gilbert and Timothy Busfield are engaged, TVGuide.com has confirmed.

Gilbert, 48, the Dancing with the Stars alum best known for her role on Little House on the Prairie, got engaged to Busfield (Thirtysomething, The West Wing), 55, over the holidays, as first reported by US Weekly.

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"They are thrilled," a rep for the actress tells TVGuide.com.

This will be the third marriage for both Gilbert — who was previously wed to Bo Brinkman and Bruce Boxleitner and has two children — and Busfield, a father of three who was previously married to Radha Delmarter and Jenny Meriwin.