| # | Book Title | Author | |
|---|---|---|---|
| 1 | It's a Twin Thing | Katschke, Judy | |
| 2 | How to Flunk Your First Date | Stine, Megan | |
| 3 | Sleepover Secret, The | Katschke, Judy | |
| 4 | One Twin Too Many | Stine, Megan | |
| 5 | To Snoop or Not To Snoop? | Katschke, Judy | |
| 6 | My Sister the Supermodel | Stine, Megan | |
| 7 | Two's a Crowd | Katschke, Judy | |
| 8 | Let's Party! | Katschke, Judy | |
| 9 | Calling All Boys | Katschke, Judy | |
| 10 | Winner Take All | Banim, Lisa | |
| 11 | P. S. Wish You Were Here | Stine, Megan | |
| 12 | Cool Club, The | Katschke, Judy | |
| 13 | War of the Wardrobes | Stine, Megan | |
| 14 | Bye-Bye Boyfriend | Katschke, Judy | |
| 15 | It's Snow Problem | Butcher, Nancy | |
| 16 | Likes Me, Likes Me Not | Stine, Megan | |
| 17 | Shore Thing | Katschke, Judy | |
| 18 | Two For the Road | Butcher, Nancy | |
| 19 | Surprise, Surprise! | Stine, Megan | |
| 20 | Sealed With a Kiss | Katschke, Judy | |
| 21 | Now You See Him, Now You Don't | Stine, Megan | |
| 22 | April Fools' Rules | Katschke, Judy | |
| 23 | Island Girls | Butcher, Nancy | |
| 24 | Surf, Sand, and Secrets | Butcher, Nancy | |
| 25 | Closer Than Ever | Katschke, Judy | |
| 26 | Perfect Gift, The | Stine, Megan | |
| 27 | Facts About Flirting, The | Katschke, Judy | |
| 28 | Dream Date Debate, The | Stine, Megan | |
| 29 | Love-Set-Match | Dubowski, Cathy East | |
| 30 | Making a Splash | Stine, Megan | |
| 31 | Dare to Scare | Katschke, Judy | |
| 32 | Santa Girls | Gallagher, Diana G. | |
| 33 | Heart to Heart | Katschke, Judy | |
| 34 | Prom Princess | Gallagher, Diana G. | |
| 35 | Camp Rock 'n Roll | Katschke, Judy | |
| 36 | Twist and Shout | Katschke, Judy | |
| 37 | Hocus-Pocus | Gikow, Louise | |
| 38 | Holiday Magic | Gallagher, Diana G. | |
| 39 | Candles, Cake, Celebrate! | Katschke, Judy | |
| 40 | Wish on a Star | Gikow, Louise |