Heidi Montag and Spencer Pratt Celebrate Mother's Day

The Hills stars Heidi Montag and boyfriend Spencer Pratt treated Heidi's mom to a special Mother's Day celebration on Sunday afternoon (May 11).

Montag's mother Darlene was in town for the weekend, visiting from Colorado, and the couple greeted her with a bouquet of a dozen red roses and a giant sized Mother's Day card.

The group laughed as they walked through a Beverly Hills park - with Heidi and Spencer playfully smooching for the cameras as the threesome stopped for a rest at a nearby bench.

Following their daytime outing, Heidi's mom was then whisked away by the peroxide pair for a fabulous brunch at the upscale Beverly Wilshire hotel.

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Enjoy the pictures of Heidi Montag and Spencer Pratt celebrating Mother's Day (May 11).