A possible concise summary is:
Rebecca, a nine-month pregnant woman, wants to learn ballet so she can teach her daughter. Her husband Matt surprises her with an advanced ballet class, where she faces mean girls who shame her for being pregnant and sabotage her outfit. Rebecca's friends join her in wearing pregnancy bellies and train with a ballet instructor named Melanie. They challenge the mean girls to a ballet-off and win with their hip-hop pregnancy flair. Rebecca becomes the prima ballerina and regains her confidence. Meanwhile, Daniel gets mysterious calls about a delivery at the warehouse.
Here are some possible facts extracted from the text:
1. Rebecca is a pregnant woman who wants to learn ballet with her daughter.
2. Matt surprises Rebecca with an advanced ballet class, but they are not prepared for it.
3. Rebecca gets shamed by some mean girls in the class who mock her appearance and skills.
4. Rebecca's hair tie breaks, her pants rip, and she feels nauseous during the class.
5. Matt's friends wear pregnancy bellies and join Rebecca in a ballet 101 session taught by Melanie Wilking.
6. Rebecca and her friends challenge the mean girls to a ballet off and add some hip-hop flair to their routine.
7. Rebecca wins the prima ballerina title and gains confidence as a pregnant ballerina.