Bill Gates' oldest child is one step closer to walking down the aisle!
Radar has learned the billionaire tycoon's 25-year-old daughter Jennifer Gates celebrated her bachelorette party in Santa Barbara, CA, over the weekend.
The bride-to-be grabbed her closest girlfriends for a relaxing beach getaway and slammed down some gin and tonics to kiss her singlehood goodbye.
Jennifer -- who recently put medical school on pause -- beamed with delight during the weekend festivities.
Their activities went beyond just drinking like the usual bachelorette weekend.
Instead, Jennifer's besties offered her a mix of exercise and literature.
In photos, Bill Gates' daughter can be seen hitting a warrior two pose on the sandy beach.
The group of 10+ women all wore matching two-pieces for yoga at Rosewood Miramar Beach.
Smiling sweetly, Jennifer and her girlfriends soaked up the sun while sporting bubble gum pink yoga pants and sports bras.
The ladies also surprised the bachelorette with a bride's beach bookmobile -- a transportable cart with all of Jennifer's favorite books.
While their afternoon seemed a little PG, it was a different story when the sun went down.
The gaggle of women partied hard, along with the bride-to-be, who ditched her yoga outfit for a flowing white dress followed by the best accessory of all -- a bridal cowboy hat.
Jennifer was seen hanging all over her girlfriends and wearing the white hat that read "Bride" in pink cursive. She also sported a bright, feathered boa.
Bill Gates' youngest daughter also joined her sister for the bridal weekend.
18-year-old Phoebe Gates -- who just graduated high school -- was spotted posing for pictures alongside Jennifer at dinner with the group.
Jennifer recently spoke out about her upcoming nuptials, revealing she can "can hardly wait" to marry the love of her life, Nayel Nassar.
She remains hopeful, despite her parents' "loveless" marriage.
As Radar reported, Melinda Gates filed for divorce from the Microsoft mogul in May after 27 years of marriage.
Bitter cheating accusations soon followed, and Bill admitted to having an affair 20 years ago.