The married couple have credited the popular keto diet with helping them shed the pounds.
Briana, 32, gave her hubby a grocery list on Thursday that was very keto-friendly.
"She's trusting me with a list!" Ryan wrote on his Instagram story. "I'm honored!"
- 'OC Housewives' Star Kelly Dodd Asks For Fans' Prayers After Husband Rick Leventhal's Terrifying Car Crash
- Vicki Gunvalson Reveals Reconnection With 'Soul Sister' Shannon Beador & 'Different' Friendship With Tamra Judge
- Prepping For Her Comeback? Vicki Gunvalson Seen Filming 'RHOC' In Mexico As Rumors Swirl About Possible Return
Items on her Costco shopping list included 2 packs of salami and a tub of cherry tomatoes, all of which are good with a keto diet.
She also included household supplies for him to pick up like dog food and batteries.
Ryan and Briana showed off the 107-pound combined weight loss on Instagram on Thursday, July 4.
Their fitness journey could be featured on RHOC's upcoming 14th season. Her mother Vicki Gunvalson confirmed that Briana will be returning after exiting the show two years ago.