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Nickelback's Chad Kroeger and Avril Lavigne haven't tied the knot just yet, but they spent the weekend partying like they did anyway. 

A source close to the bride-to-be tells "Us Weekly" the couple threw a "wedding party" Saturday night in Cannes, France as part of the build-up to the actual wedding ceremony, which is scheduled to take place today. 

Kroeger and Lavigne first announced their engagement last August.  Lavigne says she and Kroeger have penned a special wedding song, which they supposedly intend to release sometime after their big day. 

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