Reese loves retail!

On Wednesday -- the day after her 35th birthday and just a few days before her big wedding weekend -- a beaming Reese Witherspoon hit the Brentwood County Mart near her home in L.A.'s Brentwood neighborhood.

The How Do You Know star was spotted shopping for fragrances and toting a cute pink box with a pink bow (No word on whether it was a belated birthday present from a pal, a goodie for someone else -- or even an early wedding gift!). See more pics from Witherspoon's outing.

The Oscar winner is all set to tie the knot with CAA agent Jim Toth, her beau of over a year, this weekend.

Another insider confirms that Witherspoon will don a custom-made gown by Monique Lhuillier at the bash, where A-listers like Alyssa Milano, Matthew McConaughey and Jim Belushi are expected.

"Jim had his arm around Reese and was scratching her back from time to time," an onlooker said of the celebration. "They looked into each other's eyes and talked nose to nose while smiling back and forth."