Sara Gilbert and Linda Perry [Photo/Agencies]

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The couple, who started dating in 2011 and got engaged last April, tied the knot in a low-key ceremony on Sunday.

A spokesperson for 'The Talk' co-host confirmed the news to PEOPLE.com.

Guests at their nuptials included actress Juliette Lewis, who shared her excitement on Twitter, writing: "Holiday by Madonna playin, sun is beaming, gettin ready 4 the wedding of 1of my fave couples in the universe @RealLindaPerry @THEsaragilbert. (sic)"

The former 4 Non Blondes singer, who has penned hits for Christina Aguilera, Pink and Gwen Stefani, and the 39-year-old actress have yet to comment on their secret wedding.

Former 'Roseanne' star Sara, who has son, Levi, nine, and daughter Sawyer, six, with her ex-girlfriend Alison Adler, previously revealed that Linda, 48, popped the question during a romantic music-themed picnic last year.

She said: "I'm sitting there listening and I'm kind of daydreaming and I'm thinking like, 'If I ever proposed to her this would be an amazing way to do it.' The people picnicking next to us pull out string instruments from under the blanket, walk over and they start playing 'Love Song.'

"She goes to her backpack and she pulls out these T-shirts and the first T-Shirt says 'will' and then puts on another T-shirt and it says, 'you,' then 'marry,' 'me.' It was the most amazing proposal ever."