Jenelle Evans shares bikini photo following split

MYRTLE BEACH, S.C., Aug. 13 (UPI) -- Jenelle Evans took to Instagram to share a new bikini photo this week.

The 23-year-old reality star posted the picture days after announcing she and fiancé Nathan Griffith ended their engagement.

Evans showed her ex what he's missing in a pink and black two-piece, writing, "Oh u know.. Just chillin." She followed up by sharing a workout photo, and later revealed she's down to a size 2.

The reality star and Griffith had been an on-again, off-again couple since 2013, and got engaged again in January. Evans told People she is taking time to focus on herself following the split, while her ex reportedly already has a new girlfriend.

Evans and Griffith share 13-month-old son Kaiser, and the star is also mother to six-year-old Jace with ex-boyfriend Andrew Lewis. Evans came to fame on MTV reality series 16 and Pregnant, and currently stars on Teen Mom 2. New episodes air Thursdays at 9 p.m. ET.