Mila Kunis and Ashton Kutcher are soaking up their final days as a twosome before they welcome a new addition to the family! The engaged couple, who are expecting their first child together imminently, have been active in Kunis' final trimester. 

On Wednesday, Sept. 17, the pregnant star, 31, grabbed her fiancé for a morning brunch at the hip L.A. restaurant Flake. "She looked just great," an onlooker tells Us Weekly exclusively.

Kunis was out and about the following day, checking out new Lexus cars on Thursday — perhaps eyeing a roomier ride for the baby girl the stars are expecting.

The mom-to-be rounded out her week with a Saturday lunch, dining with Kutcher and good friends at L.A.'s Republique restaurant. Kunis has also been seen attending yoga classes and running errands with her future husband, 36. 

"The yoga and staying active at this level in the pregnancy was also something that was discussed [with the doctor]," a source tells Us. "She could give birth any day now, but they talk with their doctor often and there is a constant communication so everyone knows where they are at."

When Kunis is ready to give birth, she and Kutcher will be well-prepared. 

"Ashton is an efficiency expert," the source adds. "He's planned his route to the hospital and the baby bag is packed and ready at this point." 

For more on Kunis and Kutcher, watch this week's Hot Stuff video, as explained by Us Weekly entertainment director Ian Drew and Nyemiah Supreme, star of Oxygen's Sisterhood of Hip Hop.

Other stories in the roundup: George Clooney and Amal Alamuddin's wedding plans, Jennifer Lawrence's hot relationship with Chris Martin, and more.