Lindsay Lohan will exchange vows with long-rumored lover Samantha Ronson in a wedding ceremony later this year.

Lohan family matriarch Dina Lohan wants to “welcome Sam into the family” with an elaborate engagement for the lezzie lovebirds this Winter, according to a snitching scoop from Britain’s News of the World.

“Dina is still working on the date of the party but it’s looking like towards the end of the year,” a spywitness says. “Lindsay’s new album Spirit In The Dark is out in November, so I wouldn’t be surprised if it’s around then.”

“They’ve been keeping the relationship quiet for months and trying to pass each other off as ‘just good friends.’ But they’ve decided it isn’t a fling, it’s for life— so they want to make their romance public.”

Lindsay, 22, has already settled on a Chanel mini-dress for her walk down the aisle, while Sam, 30, has joked that she’ll wear a black groom-style suit complete with a TOP HAT, the tabloid writes.